PCI: Change all drivers to use pci_device->revision

Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.

This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.

In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.

Compile tested with make all{yes,mod}config on x86_64 and i386.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Acked-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c b/arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c
index 0d49d73..66acd50 100644
--- a/arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c
+++ b/arch/i386/kernel/cpu/cpufreq/cpufreq-nforce2.c
@@ -391,8 +391,6 @@
  */
 static unsigned int nforce2_detect_chipset(void)
 {
-	u8 revision;
-
 	nforce2_chipset_dev = pci_get_subsys(PCI_VENDOR_ID_NVIDIA,
 					PCI_DEVICE_ID_NVIDIA_NFORCE2,
 					PCI_ANY_ID, PCI_ANY_ID, NULL);
@@ -400,10 +398,8 @@
 	if (nforce2_chipset_dev == NULL)
 		return -ENODEV;
 
-	pci_read_config_byte(nforce2_chipset_dev, PCI_REVISION_ID, &revision);
-
 	printk(KERN_INFO "cpufreq: Detected nForce2 chipset revision %X\n",
-	       revision);
+	       nforce2_chipset_dev->revision);
 	printk(KERN_INFO
 	       "cpufreq: FSB changing is maybe unstable and can lead to crashes and data loss.\n");
 
diff --git a/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c b/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c
index 6667e9c..1941445 100644
--- a/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c
+++ b/arch/i386/kernel/cpu/cpufreq/gx-suspmod.c
@@ -115,7 +115,6 @@
 	u8 pci_suscfg;
 	u8 pci_pmer1;
 	u8 pci_pmer2;
-	u8 pci_rev;
 	struct pci_dev *cs55x0;
 };
 
@@ -276,7 +275,7 @@
 			pci_write_config_byte(gx_params->cs55x0, PCI_VIDTC, 100);/* typical 50 to 100ms */
 			pci_write_config_byte(gx_params->cs55x0, PCI_PMER1, pmer1);
 
-			if (gx_params->pci_rev < 0x10) {   /* CS5530(rev 1.2, 1.3) */
+			if (gx_params->cs55x0->revision < 0x10) {   /* CS5530(rev 1.2, 1.3) */
 				suscfg = gx_params->pci_suscfg | SUSMOD;
 			} else {                           /* CS5530A,B.. */
 				suscfg = gx_params->pci_suscfg | SUSMOD | PWRSVE;
@@ -471,7 +470,6 @@
 	pci_read_config_byte(params->cs55x0, PCI_PMER2, &(params->pci_pmer2));
 	pci_read_config_byte(params->cs55x0, PCI_MODON, &(params->on_duration));
 	pci_read_config_byte(params->cs55x0, PCI_MODOFF, &(params->off_duration));
-	pci_read_config_byte(params->cs55x0, PCI_REVISION_ID, &params->pci_rev);
 
 	if ((ret = cpufreq_register_driver(&gx_suspmod_driver))) {
 		kfree(params);
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c b/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
index 698f980..a5b2346 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-ich.c
@@ -205,7 +205,6 @@
 		 * host brige. Abort on these systems.
 		 */
 		static struct pci_dev *hostbridge;
-		u8 rev = 0;
 
 		hostbridge  = pci_get_subsys(PCI_VENDOR_ID_INTEL,
 			      PCI_DEVICE_ID_INTEL_82815_MC,
@@ -216,8 +215,7 @@
 		if (!hostbridge)
 			return 2; /* 2-M */
 
-		pci_read_config_byte(hostbridge, PCI_REVISION_ID, &rev);
-		if (rev < 5) {
+		if (hostbridge->revision < 5) {
 			dprintk("hostbridge does not support speedstep\n");
 			speedstep_chipset_dev = NULL;
 			pci_dev_put(hostbridge);
diff --git a/arch/i386/pci/fixup.c b/arch/i386/pci/fixup.c
index b95b429..e7306db 100644
--- a/arch/i386/pci/fixup.c
+++ b/arch/i386/pci/fixup.c
@@ -118,12 +118,9 @@
 static void pci_fixup_via_northbridge_bug(struct pci_dev *d)
 {
 	u8 v;
-	u8 revision;
 	int where = 0x55;
 	int mask = 0x1f; /* clear bits 5, 6, 7 by default */
 
-	pci_read_config_byte(d, PCI_REVISION_ID, &revision);
-
 	if (d->device == PCI_DEVICE_ID_VIA_8367_0) {
 		/* fix pci bus latency issues resulted by NB bios error
 		   it appears on bug free^Wreduced kt266x's bios forces
@@ -133,8 +130,8 @@
 		where = 0x95; /* the memory write queue timer register is 
 				different for the KT266x's: 0x95 not 0x55 */
 	} else if (d->device == PCI_DEVICE_ID_VIA_8363_0 &&
-			(revision == VIA_8363_KL133_REVISION_ID || 
-			revision == VIA_8363_KM133_REVISION_ID)) {
+			(d->revision == VIA_8363_KL133_REVISION_ID ||
+			d->revision == VIA_8363_KM133_REVISION_ID)) {
 			mask = 0x3f; /* clear only bits 6 and 7; clearing bit 5
 					causes screen corruption on the KL133/KM133 */
 	}
@@ -142,7 +139,7 @@
 	pci_read_config_byte(d, where, &v);
 	if (v & ~mask) {
 		printk(KERN_WARNING "Disabling VIA memory write queue (PCI ID %04x, rev %02x): [%02x] %02x & %02x -> %02x\n", \
-			d->device, revision, where, v, mask, v & mask);
+			d->device, d->revision, where, v, mask, v & mask);
 		v &= mask;
 		pci_write_config_byte(d, where, v);
 	}
diff --git a/arch/mips/pci/fixup-cobalt.c b/arch/mips/pci/fixup-cobalt.c
index 7fc475f..76b4f0f 100644
--- a/arch/mips/pci/fixup-cobalt.c
+++ b/arch/mips/pci/fixup-cobalt.c
@@ -58,8 +58,6 @@
 
 static void qube_raq_galileo_fixup(struct pci_dev *dev)
 {
-	unsigned short galileo_id;
-
 	if (dev->devfn != PCI_DEVFN(0, 0))
 		return;
 
@@ -84,16 +82,14 @@
 	 * Therefore we must set the disconnect/retry cycle values to
 	 * something sensible when using the new Galileo.
 	 */
-	pci_read_config_word(dev, PCI_REVISION_ID, &galileo_id);
-	galileo_id &= 0xff;	/* mask off class info */
 
- 	printk(KERN_INFO "Galileo: revision %u\n", galileo_id);
+ 	printk(KERN_INFO "Galileo: revision %u\n", dev->revision);
 
 #if 0
-	if (galileo_id >= 0x10) {
+	if (dev->revision >= 0x10) {
 		/* New Galileo, assumes PCI stop line to VIA is connected. */
 		GT_WRITE(GT_PCI0_TOR_OFS, 0x4020);
-	} else if (galileo_id == 0x1 || galileo_id == 0x2)
+	} else if (dev->revision == 0x1 || dev->revision == 0x2)
 #endif
 	{
 		signed int timeo;
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index f7de02a..e1ca86d 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -115,7 +115,6 @@
 
 static int acpi_processor_errata_piix4(struct pci_dev *dev)
 {
-	u8 rev = 0;
 	u8 value1 = 0;
 	u8 value2 = 0;
 
@@ -127,9 +126,7 @@
 	 * Note that 'dev' references the PIIX4 ACPI Controller.
 	 */
 
-	pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-
-	switch (rev) {
+	switch (dev->revision) {
 	case 0:
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found PIIX4 A-step\n"));
 		break;
@@ -147,7 +144,7 @@
 		break;
 	}
 
-	switch (rev) {
+	switch (dev->revision) {
 
 	case 0:		/* PIIX4 A-step */
 	case 1:		/* PIIX4 B-step */
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 6a3bfef..2610db7 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -928,20 +928,18 @@
 {
 	struct pci_dev *pdev = NULL;
 	u16 cfg;
-	u8 rev;
 	int no_piix_dma = 0;
 
 	while((pdev = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev)) != NULL)
 	{
 		/* Look for 450NX PXB. Check for problem configurations
 		   A PCI quirk checks bit 6 already */
-		pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
 		pci_read_config_word(pdev, 0x41, &cfg);
 		/* Only on the original revision: IDE DMA can hang */
-		if (rev == 0x00)
+		if (pdev->revision == 0x00)
 			no_piix_dma = 1;
 		/* On all revisions below 5 PXB bus lock must be disabled for IDE */
-		else if (cfg & (1<<14) && rev < 5)
+		else if (cfg & (1<<14) && pdev->revision < 5)
 			no_piix_dma = 2;
 	}
 	if (no_piix_dma)
diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index 30c4276..0104367 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -455,23 +455,21 @@
 
 static void ali_init_chipset(struct pci_dev *pdev)
 {
-	u8 rev, tmp;
+	u8 tmp;
 	struct pci_dev *north, *isa_bridge;
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
-
 	/*
 	 * The chipset revision selects the driver operations and
 	 * mode data.
 	 */
 
-	if (rev >= 0x20 && rev < 0xC2) {
+	if (pdev->revision >= 0x20 && pdev->revision < 0xC2) {
 		/* 1543-E/F, 1543C-C, 1543C-D, 1543C-E */
 		pci_read_config_byte(pdev, 0x4B, &tmp);
 		/* Clear CD-ROM DMA write bit */
 		tmp &= 0x7F;
 		pci_write_config_byte(pdev, 0x4B, tmp);
-	} else if (rev >= 0xC2) {
+	} else if (pdev->revision >= 0xC2) {
 		/* Enable cable detection logic */
 		pci_read_config_byte(pdev, 0x4B, &tmp);
 		pci_write_config_byte(pdev, 0x4B, tmp | 0x08);
@@ -483,21 +481,21 @@
 		/* Configure the ALi bridge logic. For non ALi rely on BIOS.
 		   Set the south bridge enable bit */
 		pci_read_config_byte(isa_bridge, 0x79, &tmp);
-		if (rev == 0xC2)
+		if (pdev->revision == 0xC2)
 			pci_write_config_byte(isa_bridge, 0x79, tmp | 0x04);
-		else if (rev > 0xC2 && rev < 0xC5)
+		else if (pdev->revision > 0xC2 && pdev->revision < 0xC5)
 			pci_write_config_byte(isa_bridge, 0x79, tmp | 0x02);
 	}
-	if (rev >= 0x20) {
+	if (pdev->revision >= 0x20) {
 		/*
 		 * CD_ROM DMA on (0x53 bit 0). Enable this even if we want
 		 * to use PIO. 0x53 bit 1 (rev 20 only) - enable FIFO control
 		 * via 0x54/55.
 		 */
 		pci_read_config_byte(pdev, 0x53, &tmp);
-		if (rev <= 0x20)
+		if (pdev->revision <= 0x20)
 			tmp &= ~0x02;
-		if (rev >= 0xc7)
+		if (pdev->revision >= 0xc7)
 			tmp |= 0x03;
 		else
 			tmp |= 0x01;	/* CD_ROM enable for DMA */
@@ -579,25 +577,23 @@
 	};
 
 	const struct ata_port_info *ppi[] = { NULL, NULL };
-	u8 rev, tmp;
+	u8 tmp;
 	struct pci_dev *isa_bridge;
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
-
 	/*
 	 * The chipset revision selects the driver operations and
 	 * mode data.
 	 */
 
-	if (rev < 0x20) {
+	if (pdev->revision < 0x20) {
 		ppi[0] = &info_early;
-	} else if (rev < 0xC2) {
+	} else if (pdev->revision < 0xC2) {
         	ppi[0] = &info_20;
-	} else if (rev == 0xC2) {
+	} else if (pdev->revision == 0xC2) {
         	ppi[0] = &info_c2;
-	} else if (rev == 0xC3) {
+	} else if (pdev->revision == 0xC3) {
         	ppi[0] = &info_c3;
-	} else if (rev == 0xC4) {
+	} else if (pdev->revision == 0xC4) {
         	ppi[0] = &info_c4;
 	} else
         	ppi[0] = &info_c5;
@@ -605,7 +601,7 @@
 	ali_init_chipset(pdev);
 
 	isa_bridge = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
-	if (isa_bridge && rev >= 0x20 && rev < 0xC2) {
+	if (isa_bridge && pdev->revision >= 0x20 && pdev->revision < 0xC2) {
 		/* Are we paired with a UDMA capable chip */
 		pci_read_config_byte(isa_bridge, 0x5E, &tmp);
 		if ((tmp & 0x1E) == 0x12)
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index b9c44c5..b09faca 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -623,17 +623,15 @@
 	const struct ata_port_info *ppi[] = { NULL, NULL };
 	static int printed_version;
 	int type = id->driver_data;
-	u8 rev;
 	u8 fifo;
 
 	if (!printed_version++)
 		dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
 	pci_read_config_byte(pdev, 0x41, &fifo);
 
 	/* Check for AMD7409 without swdma errata and if found adjust type */
-	if (type == 1 && rev > 0x7)
+	if (type == 1 && pdev->revision > 0x7)
 		type = 2;
 
 	/* Check for AMD7411 */
diff --git a/drivers/ata/pata_it821x.c b/drivers/ata/pata_it821x.c
index b67bbf6..430673b 100644
--- a/drivers/ata/pata_it821x.c
+++ b/drivers/ata/pata_it821x.c
@@ -587,8 +587,7 @@
 	itdev->want[1][1] = ATA_ANY;
 	itdev->last_device = -1;
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &conf);
-	if (conf == 0x10) {
+	if (pdev->revision == 0x11) {
 		itdev->timing10 = 1;
 		/* Need to disable ATAPI DMA for this case */
 		if (!itdev->smart)
diff --git a/drivers/ata/pata_serverworks.c b/drivers/ata/pata_serverworks.c
index 0231aba..8969154 100644
--- a/drivers/ata/pata_serverworks.c
+++ b/drivers/ata/pata_serverworks.c
@@ -410,11 +410,8 @@
 
 static int serverworks_fixup_csb(struct pci_dev *pdev)
 {
-	u8 rev;
 	u8 btr;
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
-
 	/* Third Channel Test */
 	if (!(PCI_FUNC(pdev->devfn) & 1)) {
 		struct pci_dev * findev = NULL;
@@ -456,7 +453,7 @@
 	if (!(PCI_FUNC(pdev->devfn) & 1))
 		btr |= 0x2;
 	else
-		btr |= (rev >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
+		btr |= (pdev->revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
 	pci_write_config_byte(pdev, 0x5A, btr);
 
 	return btr;
diff --git a/drivers/ata/pata_sis.c b/drivers/ata/pata_sis.c
index 2b45082..74a0211 100644
--- a/drivers/ata/pata_sis.c
+++ b/drivers/ata/pata_sis.c
@@ -928,9 +928,7 @@
 		if (host != NULL) {
 			chipset = sets;			/* Match found */
 			if (sets->device == 0x630) {	/* SIS630 */
-				u8 host_rev;
-				pci_read_config_byte(host, PCI_REVISION_ID, &host_rev);
-				if (host_rev >= 0x30)	/* 630 ET */
+				if (host->revision >= 0x30)	/* 630 ET */
 					chipset = &sis100_early;
 			}
 			break;
@@ -974,7 +972,6 @@
 		u16 trueid;
 		u8 prefctl;
 		u8 idecfg;
-		u8 sbrev;
 
 		/* Try the second unmasking technique */
 		pci_read_config_byte(pdev, 0x4a, &idecfg);
@@ -987,11 +984,10 @@
 			lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
 			if (lpc_bridge == NULL)
 				break;
-			pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
 			pci_read_config_byte(pdev, 0x49, &prefctl);
 			pci_dev_put(lpc_bridge);
 
-			if (sbrev == 0x10 && (prefctl & 0x80)) {
+			if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
 				chipset = &sis133_early;
 				break;
 			}
diff --git a/drivers/ata/pata_sl82c105.c b/drivers/ata/pata_sl82c105.c
index bde7341..8c2813a 100644
--- a/drivers/ata/pata_sl82c105.c
+++ b/drivers/ata/pata_sl82c105.c
@@ -270,7 +270,6 @@
 static int sl82c105_bridge_revision(struct pci_dev *pdev)
 {
 	struct pci_dev *bridge;
-	u8 rev;
 
 	/*
 	 * The bridge should be part of the same device, but function 0.
@@ -292,10 +291,8 @@
 	/*
 	 * We need to find function 0's revision, not function 1
 	 */
-	pci_read_config_byte(bridge, PCI_REVISION_ID, &rev);
-
 	pci_dev_put(bridge);
-	return rev;
+	return bridge->revision;
 }
 
 
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index f0cadbe..f645fe2 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -506,7 +506,6 @@
 	struct pci_dev *isa = NULL;
 	const struct via_isa_bridge *config;
 	static int printed_version;
-	u8 t;
 	u8 enable;
 	u32 timing;
 
@@ -520,9 +519,8 @@
 			!!(config->flags & VIA_BAD_ID),
 			config->id, NULL))) {
 
-			pci_read_config_byte(isa, PCI_REVISION_ID, &t);
-			if (t >= config->rev_min &&
-			    t <= config->rev_max)
+			if (isa->revision >= config->rev_min &&
+			    isa->revision <= config->rev_max)
 				break;
 			pci_dev_put(isa);
 		}
diff --git a/drivers/ata/sata_mv.c b/drivers/ata/sata_mv.c
index 3873b29..6dcfc62 100644
--- a/drivers/ata/sata_mv.c
+++ b/drivers/ata/sata_mv.c
@@ -1573,12 +1573,9 @@
 
 static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio)
 {
-	u8 rev_id;
 	int early_5080;
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
-
-	early_5080 = (pdev->device == 0x5080) && (rev_id == 0);
+	early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0);
 
 	if (!early_5080) {
 		u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
@@ -2139,17 +2136,14 @@
 {
 	struct pci_dev *pdev = to_pci_dev(host->dev);
 	struct mv_host_priv *hpriv = host->private_data;
-	u8 rev_id;
 	u32 hp_flags = hpriv->hp_flags;
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
-
 	switch(board_idx) {
 	case chip_5080:
 		hpriv->ops = &mv5xxx_ops;
 		hp_flags |= MV_HP_50XX;
 
-		switch (rev_id) {
+		switch (pdev->revision) {
 		case 0x1:
 			hp_flags |= MV_HP_ERRATA_50XXB0;
 			break;
@@ -2169,7 +2163,7 @@
 		hpriv->ops = &mv5xxx_ops;
 		hp_flags |= MV_HP_50XX;
 
-		switch (rev_id) {
+		switch (pdev->revision) {
 		case 0x0:
 			hp_flags |= MV_HP_ERRATA_50XXB0;
 			break;
@@ -2188,7 +2182,7 @@
 	case chip_608x:
 		hpriv->ops = &mv6xxx_ops;
 
-		switch (rev_id) {
+		switch (pdev->revision) {
 		case 0x7:
 			hp_flags |= MV_HP_ERRATA_60X1B2;
 			break;
@@ -2209,7 +2203,7 @@
 
 		hp_flags |= MV_HP_GEN_IIE;
 
-		switch (rev_id) {
+		switch (pdev->revision) {
 		case 0x0:
 			hp_flags |= MV_HP_ERRATA_XX42A0;
 			break;
@@ -2337,14 +2331,12 @@
 {
 	struct pci_dev *pdev = to_pci_dev(host->dev);
 	struct mv_host_priv *hpriv = host->private_data;
-	u8 rev_id, scc;
+	u8 scc;
 	const char *scc_s, *gen;
 
 	/* Use this to determine the HW stepping of the chip so we know
 	 * what errata to workaround
 	 */
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
-
 	pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
 	if (scc == 0)
 		scc_s = "SCSI";
diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c
index 0d3a38b..77637e7 100644
--- a/drivers/atm/eni.c
+++ b/drivers/atm/eni.c
@@ -1704,7 +1704,6 @@
 	struct pci_dev *pci_dev;
 	unsigned long real_base;
 	void __iomem *base;
-	unsigned char revision;
 	int error,i,last;
 
 	DPRINTK(">eni_init\n");
@@ -1715,12 +1714,6 @@
 	pci_dev = eni_dev->pci_dev;
 	real_base = pci_resource_start(pci_dev, 0);
 	eni_dev->irq = pci_dev->irq;
-	error = pci_read_config_byte(pci_dev,PCI_REVISION_ID,&revision);
-	if (error) {
-		printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%02x\n",
-		    dev->number,error);
-		return -EINVAL;
-	}
 	if ((error = pci_write_config_word(pci_dev,PCI_COMMAND,
 	    PCI_COMMAND_MEMORY |
 	    (eni_dev->asic ? PCI_COMMAND_PARITY | PCI_COMMAND_SERR : 0)))) {
@@ -1729,7 +1722,7 @@
 		return -EIO;
 	}
 	printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%lx,irq=%d,",
-	    dev->number,revision,real_base,eni_dev->irq);
+	    dev->number,pci_dev->revision,real_base,eni_dev->irq);
 	if (!(base = ioremap_nocache(real_base,MAP_MAX_SIZE))) {
 		printk("\n");
 		printk(KERN_ERR DEV_LABEL "(itf %d): can't set up page "
diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
index 3800bc0..8f995ce 100644
--- a/drivers/atm/idt77252.c
+++ b/drivers/atm/idt77252.c
@@ -3679,7 +3679,6 @@
 	unsigned long membase, srambase;
 	struct idt77252_dev *card;
 	struct atm_dev *dev;
-	ushort revision = 0;
 	int i, err;
 
 
@@ -3688,19 +3687,13 @@
 		return err;
 	}
 
-	if (pci_read_config_word(pcidev, PCI_REVISION_ID, &revision)) {
-		printk("idt77252-%d: can't read PCI_REVISION_ID\n", index);
-		err = -ENODEV;
-		goto err_out_disable_pdev;
-	}
-
 	card = kzalloc(sizeof(struct idt77252_dev), GFP_KERNEL);
 	if (!card) {
 		printk("idt77252-%d: can't allocate private data\n", index);
 		err = -ENOMEM;
 		goto err_out_disable_pdev;
 	}
-	card->revision = revision;
+	card->revision = pcidev->revision;
 	card->index = index;
 	card->pcidev = pcidev;
 	sprintf(card->name, "idt77252-%d", card->index);
@@ -3762,8 +3755,8 @@
 	}
 
 	printk("%s: ABR SAR (Rev %c): MEM %08lx SRAM %08lx [%u KB]\n",
-	       card->name, ((revision > 1) && (revision < 25)) ?
-	       'A' + revision - 1 : '?', membase, srambase,
+	       card->name, ((card->revision > 1) && (card->revision < 25)) ?
+	       'A' + card->revision - 1 : '?', membase, srambase,
 	       card->sramsize / 1024);
 
 	if (init_card(dev)) {
diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
index bb7ef57..a3b605a 100644
--- a/drivers/atm/iphase.c
+++ b/drivers/atm/iphase.c
@@ -2290,7 +2290,6 @@
 	unsigned long real_base;
 	void __iomem *base;
 	unsigned short command;  
-	unsigned char revision;  
 	int error, i; 
 	  
 	/* The device has been identified and registered. Now we read   
@@ -2305,16 +2304,14 @@
 	real_base = pci_resource_start (iadev->pci, 0);
 	iadev->irq = iadev->pci->irq;
 		  
-	if ((error = pci_read_config_word(iadev->pci, PCI_COMMAND,&command))   
-		    || (error = pci_read_config_byte(iadev->pci,   
-				PCI_REVISION_ID,&revision)))   
-	{  
+	error = pci_read_config_word(iadev->pci, PCI_COMMAND, &command);
+	if (error) {
 		printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%x\n",  
 				dev->number,error);  
 		return -EINVAL;  
 	}  
 	IF_INIT(printk(DEV_LABEL "(itf %d): rev.%d,realbase=0x%lx,irq=%d\n",  
-			dev->number, revision, real_base, iadev->irq);)  
+			dev->number, iadev->pci->revision, real_base, iadev->irq);)
 	  
 	/* find mapping size of board */  
 	  
@@ -2353,7 +2350,7 @@
 		return error;  
 	}  
 	IF_INIT(printk(DEV_LABEL " (itf %d): rev.%d,base=%p,irq=%d\n",  
-			dev->number, revision, base, iadev->irq);)  
+			dev->number, iadev->pci->revision, base, iadev->irq);)
 	  
 	/* filling the iphase dev structure */  
 	iadev->mem = iadev->pci_map_size /2;  
diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
index 09f477d..203c703 100644
--- a/drivers/atm/lanai.c
+++ b/drivers/atm/lanai.c
@@ -293,7 +293,6 @@
 	struct atm_vcc *cbrvcc;
 	int number;
 	int board_rev;
-	u8 pci_revision;
 /* TODO - look at race conditions with maintence of conf1/conf2 */
 /* TODO - transmit locking: should we use _irq not _irqsave? */
 /* TODO - organize above in some rational fashion (see <asm/cache.h>) */
@@ -1969,14 +1968,6 @@
 		    "(itf %d): No suitable DMA available.\n", lanai->number);
 		return -EBUSY;
 	}
-	/* Get the pci revision byte */
-	result = pci_read_config_byte(pci, PCI_REVISION_ID,
-	    &lanai->pci_revision);
-	if (result != PCIBIOS_SUCCESSFUL) {
-		printk(KERN_ERR DEV_LABEL "(itf %d): can't read "
-		    "PCI_REVISION_ID: %d\n", lanai->number, result);
-		return -EINVAL;
-	}
 	result = pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &w);
 	if (result != PCIBIOS_SUCCESSFUL) {
 		printk(KERN_ERR DEV_LABEL "(itf %d): can't read "
@@ -2254,7 +2245,7 @@
 	lanai_timed_poll_start(lanai);
 	printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d, base=0x%lx, irq=%u "
 	    "(%02X-%02X-%02X-%02X-%02X-%02X)\n", lanai->number,
-	    (int) lanai->pci_revision, (unsigned long) lanai->base,
+	    (int) lanai->pci->revision, (unsigned long) lanai->base,
 	    lanai->pci->irq,
 	    atmdev->esi[0], atmdev->esi[1], atmdev->esi[2],
 	    atmdev->esi[3], atmdev->esi[4], atmdev->esi[5]);
@@ -2491,7 +2482,7 @@
 		    (unsigned int) lanai->magicno, lanai->num_vci);
 	if (left-- == 0)
 		return sprintf(page, "revision: board=%d, pci_if=%d\n",
-		    lanai->board_rev, (int) lanai->pci_revision);
+		    lanai->board_rev, (int) lanai->pci->revision);
 	if (left-- == 0)
 		return sprintf(page, "EEPROM ESI: "
 		    "%02X:%02X:%02X:%02X:%02X:%02X\n",
diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c
index 2ad2527..020a87a 100644
--- a/drivers/atm/zatm.c
+++ b/drivers/atm/zatm.c
@@ -1182,7 +1182,6 @@
 	struct zatm_dev *zatm_dev;
 	struct pci_dev *pci_dev;
 	unsigned short command;
-	unsigned char revision;
 	int error,i,last;
 	unsigned long t0,t1,t2;
 
@@ -1192,8 +1191,7 @@
 	pci_dev = zatm_dev->pci_dev;
 	zatm_dev->base = pci_resource_start(pci_dev, 0);
 	zatm_dev->irq = pci_dev->irq;
-	if ((error = pci_read_config_word(pci_dev,PCI_COMMAND,&command)) ||
-	    (error = pci_read_config_byte(pci_dev,PCI_REVISION_ID,&revision))) {
+	if ((error = pci_read_config_word(pci_dev,PCI_COMMAND,&command))) {
 		printk(KERN_ERR DEV_LABEL "(itf %d): init error 0x%02x\n",
 		    dev->number,error);
 		return -EINVAL;
@@ -1206,7 +1204,7 @@
 	}
 	eprom_get_esi(dev);
 	printk(KERN_NOTICE DEV_LABEL "(itf %d): rev.%d,base=0x%x,irq=%d,",
-	    dev->number,revision,zatm_dev->base,zatm_dev->irq);
+	    dev->number,pci_dev->revision,zatm_dev->base,zatm_dev->irq);
 	/* reset uPD98401 */
 	zout(0,SWR);
 	while (!(zin(GSR) & uPD98401_INT_IND));
diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c
index e6c534e..df0ddf1 100644
--- a/drivers/char/agp/amd-k7-agp.c
+++ b/drivers/char/agp/amd-k7-agp.c
@@ -462,9 +462,7 @@
 	 * erratum 46: Setup violation on AGP SBA pins - Disable side band addressing.
 	 * With this lot disabled, we should prevent lockups. */
 	if (agp_bridge->dev->device == PCI_DEVICE_ID_AMD_FE_GATE_700E) {
-		u8 revision=0;
-		pci_read_config_byte(pdev, PCI_REVISION_ID, &revision);
-		if (revision == 0x10 || revision == 0x11) {
+		if (pdev->revision == 0x10 || pdev->revision == 0x11) {
 			agp_bridge->flags = AGP_ERRATA_FASTWRITES;
 			agp_bridge->flags |= AGP_ERRATA_SBA;
 			agp_bridge->flags |= AGP_ERRATA_1X;
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index 801abdd..d95662e 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -367,10 +367,8 @@
 static void __devinit amd8151_init(struct pci_dev *pdev, struct agp_bridge_data *bridge)
 {
 	char *revstring;
-	u8 rev_id;
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
-	switch (rev_id) {
+	switch (pdev->revision) {
 	case 0x01: revstring="A0"; break;
 	case 0x02: revstring="A1"; break;
 	case 0x11: revstring="B0"; break;
@@ -386,7 +384,7 @@
 	 * Work around errata.
 	 * Chips before B2 stepping incorrectly reporting v3.5
 	 */
-	if (rev_id < 0x13) {
+	if (pdev->revision < 0x13) {
 		printk (KERN_INFO PFX "Correcting AGP revision (reports 3.5, is really 3.0)\n");
 		bridge->major_version = 3;
 		bridge->minor_version = 0;
diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c
index 5cfcff5..e783dbf 100644
--- a/drivers/clocksource/acpi_pm.c
+++ b/drivers/clocksource/acpi_pm.c
@@ -105,14 +105,11 @@
  */
 static void __devinit acpi_pm_check_blacklist(struct pci_dev *dev)
 {
-	u8 rev;
-
 	if (acpi_pm_good)
 		return;
 
-	pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
 	/* the bug has been fixed in PIIX4M */
-	if (rev < 3) {
+	if (dev->revision < 3) {
 		printk(KERN_WARNING "* Found PM-Timer Bug on the chipset."
 		       " Due to workarounds for a bug,\n"
 		       "* this clock source is slow. Consider trying"
diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index 7a2bc06..1d76b9e 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -397,8 +397,7 @@
 	case PCI_DEVICE_ID_VIA_82C686_4:
 		/* The VT82C686B (rev 0x40) does support I2C block
 		   transactions, but the VT82C686A (rev 0x30) doesn't */
-		if (!pci_read_config_byte(pdev, PCI_REVISION_ID, &temp)
-		 && temp >= 0x40)
+		if (pdev->revision >= 0x40)
 			vt596_features |= FEATURE_I2CBLOCK;
 		break;
 	}
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index 8a6b27b..ba0fb92b 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -508,7 +508,7 @@
 	u8 tmpbyte;
 	struct pci_dev *north = pci_get_slot(dev->bus, PCI_DEVFN(0,0));
 
-	pci_read_config_byte(dev, PCI_REVISION_ID, &m5229_revision);
+	m5229_revision = dev->revision;
 
 	isa_dev = pci_get_device(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, NULL);
 
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 84ed30c..8d30b99 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -123,8 +123,7 @@
 	amd_print("Driver Version:                     2.13");
 	amd_print("South Bridge:                       %s", pci_name(bmide_dev));
 
-	pci_read_config_byte(dev, PCI_REVISION_ID, &t);
-	amd_print("Revision:                           IDE %#x", t);
+	amd_print("Revision:                           IDE %#x", dev->revision);
 	amd_print("Highest DMA rate:                   UDMA%s", amd_dma[fls(amd_config->udma_mask) - 1]);
 
 	amd_print("BM-DMA base:                        %#lx", amd_base);
@@ -312,8 +311,7 @@
  */
 
 	if (amd_config->flags & AMD_CHECK_SWDMA) {
-		pci_read_config_byte(dev, PCI_REVISION_ID, &t);
-		if (t <= 7)
+		if (dev->revision <= 7)
 			amd_config->flags |= AMD_BAD_SWDMA;
 	}
 
@@ -383,7 +381,7 @@
 
 	pci_read_config_byte(dev, PCI_REVISION_ID, &t);
 	printk(KERN_INFO "%s: %s (rev %02x) UDMA%s controller\n",
-		amd_chipset->name, pci_name(dev), t,
+		amd_chipset->name, pci_name(dev), dev->revision,
 		amd_dma[fls(amd_config->udma_mask) - 1]);
 
 /*
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 8631b6c..1e89dd6 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -88,7 +88,6 @@
 	u8 reg72 = 0, reg73 = 0;			/* primary */
 	u8 reg7a = 0, reg7b = 0;			/* secondary */
 	u8 reg50 = 1, reg51 = 1, reg57 = 0, reg71 = 0;	/* extra */
-	u8 rev = 0;
 
 	p += sprintf(p, "\nController: %d\n", index);
 	p += sprintf(p, "PCI-%x Chipset.\n", dev->device);
@@ -103,9 +102,8 @@
 	(void) pci_read_config_byte(dev, UDIDETCR1, &reg7b);
 
 	/* PCI0643/6 originally didn't have the primary channel enable bit */
-	(void) pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
 	if ((dev->device == PCI_DEVICE_ID_CMD_643) ||
-	    (dev->device == PCI_DEVICE_ID_CMD_646 && rev < 3))
+	    (dev->device == PCI_DEVICE_ID_CMD_646 && dev->revision < 3))
 		reg51 |= CNTRL_ENA_1ST;
 
 	p += sprintf(p, "---------------- Primary Channel "
@@ -604,14 +602,11 @@
 
 static int __devinit init_setup_cmd646(struct pci_dev *dev, ide_pci_device_t *d)
 {
-	u8 rev = 0;
-
 	/*
 	 * The original PCI0646 didn't have the primary channel enable bit,
 	 * it appeared starting with PCI0646U (i.e. revision ID 3).
 	 */
-	pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-	if (rev < 3)
+	if (dev->revision < 3)
 		d->enablebits[0].reg = 0;
 
 	return ide_setup_pci_device(dev, d);
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 4b6bae8..e9b07a9 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1413,11 +1413,9 @@
 static int __devinit init_setup_hpt371(struct pci_dev *dev, ide_pci_device_t *d)
 {
 	struct hpt_info *info;
-	u8 rev = 0, mcr1 = 0;
+	u8 mcr1 = 0;
 
-	pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-
-	if (rev > 1) {
+	if (dev->revision > 1) {
 		d->name = "HPT371N";
 
 		info = &hpt371n;
@@ -1442,11 +1440,8 @@
 static int __devinit init_setup_hpt372a(struct pci_dev *dev, ide_pci_device_t *d)
 {
 	struct hpt_info *info;
-	u8 rev = 0;
 
-	pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-
-	if (rev > 1) {
+	if (dev->revision > 1) {
 		d->name = "HPT372N";
 
 		info = &hpt372n;
@@ -1460,11 +1455,8 @@
 static int __devinit init_setup_hpt302(struct pci_dev *dev, ide_pci_device_t *d)
 {
 	struct hpt_info *info;
-	u8 rev = 0;
 
-	pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-
-	if (rev > 1) {
+	if (dev->revision > 1) {
 		d->name = "HPT302N";
 
 		info = &hpt302n;
@@ -1478,7 +1470,7 @@
 static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d)
 {
 	struct pci_dev *dev2;
-	u8 rev = 0;
+	u8 rev = dev->revision;
 	static char   *chipset_names[] = { "HPT366", "HPT366",  "HPT368",
 					   "HPT370", "HPT370A", "HPT372",
 					   "HPT372N" };
@@ -1489,8 +1481,6 @@
 	if (PCI_FUNC(dev->devfn) & 1)
 		return -ENODEV;
 
-	pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-
 	switch (rev) {
 	case 0:
 	case 1:
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 2e0b29e..1372c35 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -572,18 +572,16 @@
 {
 	struct pci_dev *pdev = NULL;
 	u16 cfg;
-	u8 rev;
 	while((pdev=pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, pdev))!=NULL)
 	{
 		/* Look for 450NX PXB. Check for problem configurations
 		   A PCI quirk checks bit 6 already */
-		pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
 		pci_read_config_word(pdev, 0x41, &cfg);
 		/* Only on the original revision: IDE DMA can hang */
-		if(rev == 0x00)
+		if (pdev->revision == 0x00)
 			no_piix_dma = 1;
 		/* On all revisions below 5 PXB bus lock must be disabled for IDE */
-		else if(cfg & (1<<14) && rev < 5)
+		else if (cfg & (1<<14) && pdev->revision < 5)
 			no_piix_dma = 2;
 	}
 	if(no_piix_dma)
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index 1371b5b..ed04e0c 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -55,7 +55,6 @@
 	NULL
 };
 
-static u8 svwks_revision = 0;
 static struct pci_dev *isa_dev;
 
 static int check_in_drive_lists (ide_drive_t *drive, const char **list)
@@ -71,9 +70,6 @@
 	struct pci_dev *dev     = HWIF(drive)->pci_dev;
 	u8 mask = 0;
 
-	if (!svwks_revision)
-		pci_read_config_byte(dev, PCI_REVISION_ID, &svwks_revision);
-
 	if (dev->device == PCI_DEVICE_ID_SERVERWORKS_HT1000IDE)
 		return 0x1f;
 	if (dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4IDE) {
@@ -88,9 +84,9 @@
 			return 0;
 		/* Check the OSB4 DMA33 enable bit */
 		return ((reg & 0x00004000) == 0x00004000) ? 0x07 : 0;
-	} else if (svwks_revision < SVWKS_CSB5_REVISION_NEW) {
+	} else if (dev->revision < SVWKS_CSB5_REVISION_NEW) {
 		return 0x07;
-	} else if (svwks_revision >= SVWKS_CSB5_REVISION_NEW) {
+	} else if (dev->revision >= SVWKS_CSB5_REVISION_NEW) {
 		u8 btr = 0, mode;
 		pci_read_config_byte(dev, 0x5A, &btr);
 		mode = btr & 0x3;
@@ -234,9 +230,6 @@
 	unsigned int reg;
 	u8 btr;
 
-	/* save revision id to determine DMA capability */
-	pci_read_config_byte(dev, PCI_REVISION_ID, &svwks_revision);
-
 	/* force Master Latency Timer value to 64 PCICLKs */
 	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x40);
 
@@ -315,7 +308,7 @@
 		if (!(PCI_FUNC(dev->devfn) & 1))
 			btr |= 0x2;
 		else
-			btr |= (svwks_revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
+			btr |= (dev->revision >= SVWKS_CSB5_REVISION_NEW) ? 0x3 : 0x2;
 		pci_write_config_byte(dev, 0x5A, btr);
 	}
 	/* Setup HT1000 SouthBridge Controller - Single Channel Only */
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index f875183..756a9b6 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -659,9 +659,7 @@
 
 		/* Special case for SiS630 : 630S/ET is ATA_100a */
 		if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
-			u8 hostrev;
-			pci_read_config_byte(host, PCI_REVISION_ID, &hostrev);
-			if (hostrev >= 0x30)
+			if (host->revision >= 0x30)
 				chipset_family = ATA_100a;
 		}
 		pci_dev_put(host);
@@ -702,7 +700,6 @@
 			u16 trueid;
 			u8 prefctl;
 			u8 idecfg;
-			u8 sbrev;
 
 			pci_read_config_byte(dev, 0x4a, &idecfg);
 			pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
@@ -712,11 +709,10 @@
 			if (trueid == 0x5517) { /* SiS 961/961B */
 
 				lpc_bridge = pci_get_slot(dev->bus, 0x10); /* Bus 0, Dev 2, Fn 0 */
-				pci_read_config_byte(lpc_bridge, PCI_REVISION_ID, &sbrev);
 				pci_read_config_byte(dev, 0x49, &prefctl);
 				pci_dev_put(lpc_bridge);
 
-				if (sbrev == 0x10 && (prefctl & 0x80)) {
+				if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
 					printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
 					chipset_family = ATA_133a;
 				} else {
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index 4878798..a7323d2 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -338,7 +338,6 @@
 static unsigned int sl82c105_bridge_revision(struct pci_dev *dev)
 {
 	struct pci_dev *bridge;
-	u8 rev;
 
 	/*
 	 * The bridge should be part of the same device, but function 0.
@@ -360,10 +359,9 @@
 	/*
 	 * We need to find function 0's revision, not function 1
 	 */
-	pci_read_config_byte(bridge, PCI_REVISION_ID, &rev);
 	pci_dev_put(bridge);
 
-	return rev;
+	return bridge->revision;
 }
 
 /*
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index d21dd2e..27e92fb 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -237,16 +237,14 @@
 static struct via_isa_bridge *via_config_find(struct pci_dev **isa)
 {
 	struct via_isa_bridge *via_config;
-	u8 t;
 
 	for (via_config = via_isa_bridges; via_config->id; via_config++)
 		if ((*isa = pci_get_device(PCI_VENDOR_ID_VIA +
 			!!(via_config->flags & VIA_BAD_ID),
 			via_config->id, NULL))) {
 
-			pci_read_config_byte(*isa, PCI_REVISION_ID, &t);
-			if (t >= via_config->rev_min &&
-			    t <= via_config->rev_max)
+			if ((*isa)->revision >= via_config->rev_min &&
+			    (*isa)->revision <= via_config->rev_max)
 				break;
 			pci_dev_put(*isa);
 		}
@@ -404,10 +402,9 @@
 	 * Print the boot message.
 	 */
 
-	pci_read_config_byte(isa, PCI_REVISION_ID, &t);
 	printk(KERN_INFO "VP_IDE: VIA %s (rev %02x) IDE %sDMA%s "
 		"controller on pci%s\n",
-		via_config->name, t,
+		via_config->name, isa->revision,
 		via_config->udma_mask ? "U" : "MW",
 		via_dma[via_config->udma_mask ?
 			(fls(via_config->udma_mask) - 1) : 0],
diff --git a/drivers/infiniband/hw/ipath/ipath_driver.c b/drivers/infiniband/hw/ipath/ipath_driver.c
index e3a2232..834e86f 100644
--- a/drivers/infiniband/hw/ipath/ipath_driver.c
+++ b/drivers/infiniband/hw/ipath/ipath_driver.c
@@ -270,7 +270,6 @@
 	struct ipath_devdata *dd;
 	unsigned long long addr;
 	u32 bar0 = 0, bar1 = 0;
-	u8 rev;
 
 	dd = ipath_alloc_devdata(pdev);
 	if (IS_ERR(dd)) {
@@ -432,13 +431,7 @@
 	dd->ipath_deviceid = ent->device;	/* save for later use */
 	dd->ipath_vendorid = ent->vendor;
 
-	ret = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
-	if (ret) {
-		ipath_dev_err(dd, "Failed to read PCI revision ID unit "
-			      "%u: err %d\n", dd->ipath_unit, -ret);
-		goto bail_regions;	/* shouldn't ever happen */
-	}
-	dd->ipath_pcirev = rev;
+	dd->ipath_pcirev = pdev->revision;
 
 #if defined(__powerpc__)
 	/* There isn't a generic way to specify writethrough mappings */
diff --git a/drivers/isdn/hisax/bkm_a8.c b/drivers/isdn/hisax/bkm_a8.c
index 3403106..6339bb4 100644
--- a/drivers/isdn/hisax/bkm_a8.c
+++ b/drivers/isdn/hisax/bkm_a8.c
@@ -287,7 +287,6 @@
 #ifdef CONFIG_PCI
 	struct IsdnCardState *cs = card->cs;
 	char tmp[64];
-	u_char pci_rev_id;
 	u_int found = 0;
 	u_int pci_ioaddr1, pci_ioaddr2, pci_ioaddr3, pci_ioaddr4, pci_ioaddr5;
 
@@ -335,8 +334,7 @@
 		}
 #ifdef ATTEMPT_PCI_REMAPPING
 /* HACK: PLX revision 1 bug: PLX address bit 7 must not be set */
-		pci_read_config_byte(dev_a8, PCI_REVISION_ID, &pci_rev_id);
-		if ((pci_ioaddr1 & 0x80) && (pci_rev_id == 1)) {
+		if ((pci_ioaddr1 & 0x80) && (dev_a8->revision == 1)) {
 			printk(KERN_WARNING "HiSax: %s (%s): PLX rev 1, remapping required!\n",
 				CardType[card->typ],
 				sct_quadro_subtypes[cs->subtyp]);
diff --git a/drivers/media/radio/radio-gemtek-pci.c b/drivers/media/radio/radio-gemtek-pci.c
index fdf5d6e..5e6f17d 100644
--- a/drivers/media/radio/radio-gemtek-pci.c
+++ b/drivers/media/radio/radio-gemtek-pci.c
@@ -94,7 +94,6 @@
 
 	u32 iobase;
 	u32 length;
-	u8  chiprev;
 	u16 model;
 
 	u32 current_frequency;
@@ -415,7 +414,6 @@
 		goto err_pci;
 	}
 
-	pci_read_config_byte( pci_dev, PCI_REVISION_ID, &card->chiprev );
 	pci_read_config_word( pci_dev, PCI_SUBSYSTEM_ID, &card->model );
 
 	pci_set_drvdata( pci_dev, card );
@@ -436,7 +434,7 @@
 	gemtek_pci_mute( card );
 
 	printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
-		card->chiprev, card->iobase, card->iobase + card->length - 1 );
+		pci_dev->revision, card->iobase, card->iobase + card->length - 1 );
 
 	return 0;
 
diff --git a/drivers/media/video/meye.c b/drivers/media/video/meye.c
index 664aba8..7533fc2 100644
--- a/drivers/media/video/meye.c
+++ b/drivers/media/video/meye.c
@@ -1809,7 +1809,6 @@
 {
 	int ret = -EBUSY;
 	unsigned long mchip_adr;
-	u8 revision;
 
 	if (meye.mchip_dev != NULL) {
 		printk(KERN_ERR "meye: only one device allowed!\n");
@@ -1885,7 +1884,6 @@
 		goto outreqirq;
 	}
 
-	pci_read_config_byte(meye.mchip_dev, PCI_REVISION_ID, &revision);
 	pci_write_config_byte(meye.mchip_dev, PCI_CACHE_LINE_SIZE, 8);
 	pci_write_config_byte(meye.mchip_dev, PCI_LATENCY_TIMER, 64);
 
@@ -1939,7 +1937,7 @@
 	printk(KERN_INFO "meye: Motion Eye Camera Driver v%s.\n",
 	       MEYE_DRIVER_VERSION);
 	printk(KERN_INFO "meye: mchip KL5A72002 rev. %d, base %lx, irq %d\n",
-	       revision, mchip_adr, meye.mchip_irq);
+	       meye.mchip_dev->revision, mchip_adr, meye.mchip_irq);
 
 	return 0;
 
diff --git a/drivers/net/8139cp.c b/drivers/net/8139cp.c
index 58bbc3e..807e699 100644
--- a/drivers/net/8139cp.c
+++ b/drivers/net/8139cp.c
@@ -1799,7 +1799,6 @@
 	void __iomem *regs;
 	resource_size_t pciaddr;
 	unsigned int addr_len, i, pci_using_dac;
-	u8 pci_rev;
 
 #ifndef MODULE
 	static int version_printed;
@@ -1807,13 +1806,11 @@
 		printk("%s", version);
 #endif
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
-
 	if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
-	    pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev < 0x20) {
+	    pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision < 0x20) {
 		dev_err(&pdev->dev,
 			   "This (id %04x:%04x rev %02x) is not an 8139C+ compatible chip\n",
-		           pdev->vendor, pdev->device, pci_rev);
+		           pdev->vendor, pdev->device, pdev->revision);
 		dev_err(&pdev->dev, "Try the \"8139too\" driver instead.\n");
 		return -ENODEV;
 	}
diff --git a/drivers/net/8139too.c b/drivers/net/8139too.c
index a844b1f..77457c7 100644
--- a/drivers/net/8139too.c
+++ b/drivers/net/8139too.c
@@ -931,7 +931,6 @@
 	int i, addr_len, option;
 	void __iomem *ioaddr;
 	static int board_idx = -1;
-	u8 pci_rev;
 
 	assert (pdev != NULL);
 	assert (ent != NULL);
@@ -949,13 +948,11 @@
 	}
 #endif
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
-
 	if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
-	    pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev >= 0x20) {
+	    pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pdev->revision >= 0x20) {
 		dev_info(&pdev->dev,
 			   "This (id %04x:%04x rev %02x) is an enhanced 8139C+ chip\n",
-		       	   pdev->vendor, pdev->device, pci_rev);
+		       	   pdev->vendor, pdev->device, pdev->revision);
 		dev_info(&pdev->dev,
 			   "Use the \"8139cp\" driver for improved performance and stability.\n");
 	}
diff --git a/drivers/net/atl1/atl1.h b/drivers/net/atl1/atl1.h
index b1c6034..df4c1a0 100644
--- a/drivers/net/atl1/atl1.h
+++ b/drivers/net/atl1/atl1.h
@@ -210,7 +210,6 @@
 	u16 phy_spd_default;
 
 	u16 dev_rev;
-	u8 revision_id;
 
 	/* spi flash */
 	u8 flash_vendor;
diff --git a/drivers/net/atl1/atl1_main.c b/drivers/net/atl1/atl1_main.c
index 3bb40dd4..501919e 100644
--- a/drivers/net/atl1/atl1_main.c
+++ b/drivers/net/atl1/atl1_main.c
@@ -118,10 +118,6 @@
 {
 	struct atl1_hw *hw = &adapter->hw;
 	struct net_device *netdev = adapter->netdev;
-	struct pci_dev *pdev = adapter->pdev;
-
-	/* PCI config space info */
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
 
 	hw->max_frame_size = netdev->mtu + ENET_HEADER_SIZE + ETHERNET_FCS_SIZE;
 	hw->min_frame_size = MINIMUM_ETHERNET_FRAME_SIZE;
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index ce3ed67..23958f7 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -6363,10 +6363,9 @@
 		while ((amd_8132 = pci_get_device(PCI_VENDOR_ID_AMD,
 						  PCI_DEVICE_ID_AMD_8132_BRIDGE,
 						  amd_8132))) {
-			u8 rev;
 
-			pci_read_config_byte(amd_8132, PCI_REVISION_ID, &rev);
-			if (rev >= 0x10 && rev <= 0x13) {
+			if (amd_8132->revision >= 0x10 &&
+			    amd_8132->revision <= 0x13) {
 				disable_msi = 1;
 				pci_dev_put(amd_8132);
 				break;
diff --git a/drivers/net/cassini.c b/drivers/net/cassini.c
index 59b9943..805924fc 100644
--- a/drivers/net/cassini.c
+++ b/drivers/net/cassini.c
@@ -3422,21 +3422,19 @@
 static void cas_check_pci_invariants(struct cas *cp)
 {
 	struct pci_dev *pdev = cp->pdev;
-	u8 rev;
 
 	cp->cas_flags = 0;
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
 	if ((pdev->vendor == PCI_VENDOR_ID_SUN) &&
 	    (pdev->device == PCI_DEVICE_ID_SUN_CASSINI)) {
-		if (rev >= CAS_ID_REVPLUS)
+		if (pdev->revision >= CAS_ID_REVPLUS)
 			cp->cas_flags |= CAS_FLAG_REG_PLUS;
-		if (rev < CAS_ID_REVPLUS02u)
+		if (pdev->revision < CAS_ID_REVPLUS02u)
 			cp->cas_flags |= CAS_FLAG_TARGET_ABORT;
 
 		/* Original Cassini supports HW CSUM, but it's not
 		 * enabled by default as it can trigger TX hangs.
 		 */
-		if (rev < CAS_ID_REV2)
+		if (pdev->revision < CAS_ID_REV2)
 			cp->cas_flags |= CAS_FLAG_NO_HW_CSUM;
 	} else {
 		/* Only sun has original cassini chips.  */
diff --git a/drivers/net/dl2k.c b/drivers/net/dl2k.c
index 74ec64a..fab4fc9f 100644
--- a/drivers/net/dl2k.c
+++ b/drivers/net/dl2k.c
@@ -250,7 +250,6 @@
 			np->an_enable = 1;
 		mii_set_media (dev);
 	}
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &np->pci_rev_id);
 
 	err = register_netdev (dev);
 	if (err)
@@ -879,7 +878,7 @@
 			skb->protocol = eth_type_trans (skb, dev);
 #if 0
 			/* Checksum done by hw, but csum value unavailable. */
-			if (np->pci_rev_id >= 0x0c &&
+			if (np->pdev->pci_rev_id >= 0x0c &&
 				!(frame_status & (TCPError | UDPError | IPError))) {
 				skb->ip_summed = CHECKSUM_UNNECESSARY;
 			}
diff --git a/drivers/net/dl2k.h b/drivers/net/dl2k.h
index 814c449..e443065 100644
--- a/drivers/net/dl2k.h
+++ b/drivers/net/dl2k.h
@@ -668,7 +668,6 @@
 	unsigned int rx_flow:1;		/* Rx flow control enable */
 	unsigned int phy_media:1;	/* 1: fiber, 0: copper */
 	unsigned int link_status:1;	/* Current link status */
-	unsigned char pci_rev_id;	/* PCI revision ID */
 	struct netdev_desc *last_tx;	/* Last Tx descriptor used. */
 	unsigned long cur_rx, old_rx;	/* Producer/consumer ring indices */
 	unsigned long cur_tx, old_tx;
diff --git a/drivers/net/e100.c b/drivers/net/e100.c
index 74ea637..6b6401e 100644
--- a/drivers/net/e100.c
+++ b/drivers/net/e100.c
@@ -583,7 +583,6 @@
 	u32 rx_tco_frames;
 	u32 rx_over_length_errors;
 
-	u8 rev_id;
 	u16 leds;
 	u16 eeprom_wc;
 	u16 eeprom[256];
@@ -937,9 +936,8 @@
 	struct param_range rfds = { .min = 16, .max = 256, .count = 256 };
 	struct param_range cbs  = { .min = 64, .max = 256, .count = 128 };
 
-	pci_read_config_byte(nic->pdev, PCI_REVISION_ID, &nic->rev_id);
 	/* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */
-	nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->rev_id;
+	nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->pdev->revision;
 	if(nic->mac == mac_unknown)
 		nic->mac = mac_82557_D100_A;
 
@@ -1279,7 +1277,7 @@
 	if (nic->flags & ich)
 		goto noloaducode;
 
-	/* Search for ucode match against h/w rev_id */
+	/* Search for ucode match against h/w revision */
 	for (opts = ucode_opts; opts->mac; opts++) {
 		int i;
 		u32 *ucode = opts->ucode;
@@ -2238,7 +2236,7 @@
 	u32 *buff = p;
 	int i;
 
-	regs->version = (1 << 24) | nic->rev_id;
+	regs->version = (1 << 24) | nic->pdev->revision;
 	buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 |
 		ioread8(&nic->csr->scb.cmd_lo) << 16 |
 		ioread16(&nic->csr->scb.status);
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index cf8af92..f48b659 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -1266,8 +1266,7 @@
 	hw->device_id = pdev->device;
 	hw->subsystem_vendor_id = pdev->subsystem_vendor;
 	hw->subsystem_id = pdev->subsystem_device;
-
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
+	hw->revision_id = pdev->revision;
 
 	pci_read_config_word(pdev, PCI_COMMAND, &hw->pci_cmd_word);
 
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 42ba1c0..67046e8 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -5084,15 +5084,13 @@
 	np->wolenabled = 0;
 
 	if (id->driver_data & DEV_HAS_POWER_CNTRL) {
-		u8 revision_id;
-		pci_read_config_byte(pci_dev, PCI_REVISION_ID, &revision_id);
 
 		/* take phy and nic out of low power mode */
 		powerstate = readl(base + NvRegPowerState2);
 		powerstate &= ~NVREG_POWERSTATE2_POWERUP_MASK;
 		if ((id->device == PCI_DEVICE_ID_NVIDIA_NVENET_12 ||
 		     id->device == PCI_DEVICE_ID_NVIDIA_NVENET_13) &&
-		    revision_id >= 0xA3)
+		    pci_dev->revision >= 0xA3)
 			powerstate |= NVREG_POWERSTATE2_POWERUP_REV_A3;
 		writel(powerstate, base + NvRegPowerState2);
 	}
diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 56f8197..b703ccf 100644
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -54,8 +54,6 @@
 #define NETXEN_ADAPTER_UP_MAGIC 777
 #define NETXEN_NIC_PEG_TUNE 0
 
-u8 nx_p2_id = NX_P2_C0;
-
 #define DMA_32BIT_MASK	0x00000000ffffffffULL
 #define DMA_35BIT_MASK	0x00000007ffffffffULL
 
@@ -307,8 +305,7 @@
 		goto err_out_disable_pdev;
 
 	pci_set_master(pdev);
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &nx_p2_id);
-	if (nx_p2_id == NX_P2_C1 &&
+	if (pdev->revision == NX_P2_C1 &&
 	    (pci_set_dma_mask(pdev, DMA_35BIT_MASK) == 0) &&
 	    (pci_set_consistent_dma_mask(pdev, DMA_35BIT_MASK) == 0)) {
 		pci_using_dac = 1;
@@ -552,7 +549,7 @@
 	INIT_WORK(&adapter->watchdog_task, netxen_watchdog_task);
 	adapter->ahw.pdev = pdev;
 	adapter->proc_cmd_buf_counter = 0;
-	adapter->ahw.revision_id = nx_p2_id;
+	adapter->ahw.revision_id = pdev->revision;
 
 	/* make sure Window == 1 */
 	netxen_nic_pci_change_crbwindow(adapter, 1);
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index fa29a40..58bbfdd 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -1135,7 +1135,7 @@
 	 * SXE-008 TRANSMIT DMA ARBITRATION ISSUE.
 	 */
 	if ((nic->device_type == XFRAME_I_DEVICE) &&
-		(get_xena_rev_id(nic->pdev) < 4))
+		(nic->pdev->revision < 4))
 		writeq(PCC_ENABLE_FOUR, &bar0->pcc_enable);
 
 	val64 = readq(&bar0->tx_fifo_partition_0);
@@ -1873,7 +1873,7 @@
 	herc = (sp->device_type == XFRAME_II_DEVICE);
 
 	if (flag == FALSE) {
-		if ((!herc && (get_xena_rev_id(sp->pdev) >= 4)) || herc) {
+		if ((!herc && (sp->pdev->revision >= 4)) || herc) {
 			if (!(val64 & ADAPTER_STATUS_RMAC_PCC_IDLE))
 				ret = 1;
 		} else {
@@ -1881,7 +1881,7 @@
 				ret = 1;
 		}
 	} else {
-		if ((!herc && (get_xena_rev_id(sp->pdev) >= 4)) || herc) {
+		if ((!herc && (sp->pdev->revision >= 4)) || herc) {
 			if (((val64 & ADAPTER_STATUS_RMAC_PCC_IDLE) ==
 			     ADAPTER_STATUS_RMAC_PCC_IDLE))
 				ret = 1;
@@ -7076,23 +7076,6 @@
 }
 
 /**
- *  get_xena_rev_id - to identify revision ID of xena.
- *  @pdev : PCI Dev structure
- *  Description:
- *  Function to identify the Revision ID of xena.
- *  Return value:
- *  returns the revision ID of the device.
- */
-
-static int get_xena_rev_id(struct pci_dev *pdev)
-{
-	u8 id = 0;
-	int ret;
-	ret = pci_read_config_byte(pdev, PCI_REVISION_ID, (u8 *) & id);
-	return id;
-}
-
-/**
  *  s2io_init_pci -Initialization of PCI and PCI-X configuration registers .
  *  @sp : private member of the device structure, which is a pointer to the
  *  s2io_nic structure.
@@ -7550,7 +7533,7 @@
 	s2io_vpd_read(sp);
 	DBG_PRINT(ERR_DBG, "Copyright(c) 2002-2007 Neterion Inc.\n");
 	DBG_PRINT(ERR_DBG, "%s: Neterion %s (rev %d)\n",dev->name,
-		  sp->product_name, get_xena_rev_id(sp->pdev));
+		  sp->product_name, pdev->revision);
 	DBG_PRINT(ERR_DBG, "%s: Driver version %s\n", dev->name,
 		  s2io_driver_version);
 	DBG_PRINT(ERR_DBG, "%s: MAC ADDR: "
diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h
index 5859278..3887fe6 100644
--- a/drivers/net/s2io.h
+++ b/drivers/net/s2io.h
@@ -1033,7 +1033,6 @@
 static int s2io_set_swapper(struct s2io_nic * sp);
 static void s2io_card_down(struct s2io_nic *nic);
 static int s2io_card_up(struct s2io_nic *nic);
-static int get_xena_rev_id(struct pci_dev *pdev);
 static int wait_for_cmd_complete(void __iomem *addr, u64 busy_bit,
 					int bit_state);
 static int s2io_add_isr(struct s2io_nic * sp);
diff --git a/drivers/net/sundance.c b/drivers/net/sundance.c
index e1f912d..c9f7b7a 100644
--- a/drivers/net/sundance.c
+++ b/drivers/net/sundance.c
@@ -397,7 +397,6 @@
 	unsigned char phys[MII_CNT];		/* MII device addresses, only first one used. */
 	struct pci_dev *pci_dev;
 	void __iomem *base;
-	unsigned char pci_rev_id;
 };
 
 /* The station address location in the EEPROM. */
@@ -544,8 +543,6 @@
 	dev->change_mtu = &change_mtu;
 	pci_set_drvdata(pdev, dev);
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &np->pci_rev_id);
-
 	i = register_netdev(dev);
 	if (i)
 		goto err_out_unmap_rx;
@@ -828,7 +825,7 @@
 	iowrite8(100, ioaddr + RxDMAPollPeriod);
 	iowrite8(127, ioaddr + TxDMAPollPeriod);
 	/* Fix DFE-580TX packet drop issue */
-	if (np->pci_rev_id >= 0x14)
+	if (np->pci_dev->revision >= 0x14)
 		iowrite8(0x01, ioaddr + DebugCtrl1);
 	netif_start_queue(dev);
 
@@ -1194,7 +1191,7 @@
 			hw_frame_id = ioread8(ioaddr + TxFrameId);
 		}
 
-		if (np->pci_rev_id >= 0x14) {
+		if (np->pci_dev->revision >= 0x14) {
 			spin_lock(&np->lock);
 			for (; np->cur_tx - np->dirty_tx > 0; np->dirty_tx++) {
 				int entry = np->dirty_tx % TX_RING_SIZE;
diff --git a/drivers/net/sunhme.c b/drivers/net/sunhme.c
index 15146a1..8b35f13 100644
--- a/drivers/net/sunhme.c
+++ b/drivers/net/sunhme.c
@@ -3095,12 +3095,8 @@
 
 #ifdef CONFIG_SPARC
 	hp->hm_revision = of_getintprop_default(dp, "hm-rev", 0xff);
-	if (hp->hm_revision == 0xff) {
-		unsigned char prev;
-
-		pci_read_config_byte(pdev, PCI_REVISION_ID, &prev);
-		hp->hm_revision = 0xc0 | (prev & 0x0f);
-	}
+	if (hp->hm_revision == 0xff)
+		hp->hm_revision = 0xc0 | (pdev->revision & 0x0f);
 #else
 	/* works with this on non-sparc hosts */
 	hp->hm_revision = 0x20;
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 2f31841..b148d57 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10498,11 +10498,7 @@
 				continue;
 			}
 			if (pci_id->rev != PCI_ANY_ID) {
-				u8 rev;
-
-				pci_read_config_byte(bridge, PCI_REVISION_ID,
-						     &rev);
-				if (rev > pci_id->rev)
+				if (bridge->revision > pci_id->rev)
 					continue;
 			}
 			if (bridge->subordinate &&
diff --git a/drivers/net/tlan.c b/drivers/net/tlan.c
index 106dc1e..74eb121 100644
--- a/drivers/net/tlan.c
+++ b/drivers/net/tlan.c
@@ -533,7 +533,6 @@
 
 	struct net_device  *dev;
 	TLanPrivateInfo    *priv;
-	u8		   pci_rev;
 	u16		   device_id;
 	int		   reg, rc = -ENODEV;
 
@@ -577,8 +576,6 @@
 			goto err_out_free_dev;
 		}
 
-		pci_read_config_byte ( pdev, PCI_REVISION_ID, &pci_rev);
-
 		for ( reg= 0; reg <= 5; reg ++ ) {
 			if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
 				pci_io_base = pci_resource_start(pdev, reg);
@@ -595,7 +592,7 @@
 
 		dev->base_addr = pci_io_base;
 		dev->irq = pdev->irq;
-		priv->adapterRev = pci_rev;
+		priv->adapterRev = pdev->revision;
 		pci_set_master(pdev);
 		pci_set_drvdata(pdev, dev);
 
diff --git a/drivers/net/tulip/de4x5.c b/drivers/net/tulip/de4x5.c
index 42fca26..0990289 100644
--- a/drivers/net/tulip/de4x5.c
+++ b/drivers/net/tulip/de4x5.c
@@ -2134,7 +2134,7 @@
     u_short vendor, status;
     u_int irq = 0, device;
     u_long iobase = 0;                     /* Clear upper 32 bits in Alphas */
-    int i, j, cfrv;
+    int i, j;
     struct de4x5_private *lp = netdev_priv(dev);
     struct list_head *walk;
 
@@ -2150,7 +2150,6 @@
 
 	/* Get the chip configuration revision register */
 	pb = this_dev->bus->number;
-	pci_read_config_dword(this_dev, PCI_REVISION_ID, &cfrv);
 
 	/* Set the device number information */
 	lp->device = PCI_SLOT(this_dev->devfn);
@@ -2158,7 +2157,8 @@
 
 	/* Set the chipset information */
 	if (is_DC2114x) {
-	    device = ((cfrv & CFRV_RN) < DC2114x_BRK ? DC21142 : DC21143);
+	    device = ((this_dev->revision & CFRV_RN) < DC2114x_BRK
+		      ? DC21142 : DC21143);
 	}
 	lp->chipset = device;
 
@@ -2254,7 +2254,7 @@
 	}
 
 	/* Get the chip configuration revision register */
-	pci_read_config_dword(pdev, PCI_REVISION_ID, &lp->cfrv);
+	lp->cfrv = pdev->revision;
 
 	/* Set the device number information */
 	lp->device = dev_num;
diff --git a/drivers/net/tulip/dmfe.c b/drivers/net/tulip/dmfe.c
index 4ed67ff..dab74fe 100644
--- a/drivers/net/tulip/dmfe.c
+++ b/drivers/net/tulip/dmfe.c
@@ -181,11 +181,12 @@
 	udelay(5);
 
 #define __CHK_IO_SIZE(pci_id, dev_rev) \
- (( ((pci_id)==PCI_DM9132_ID) || ((dev_rev) >= 0x02000030) ) ? \
+ (( ((pci_id)==PCI_DM9132_ID) || ((dev_rev) >= 0x30) ) ? \
 	DM9102A_IO_SIZE: DM9102_IO_SIZE)
 
-#define CHK_IO_SIZE(pci_dev, dev_rev) \
-	(__CHK_IO_SIZE(((pci_dev)->device << 16) | (pci_dev)->vendor, dev_rev))
+#define CHK_IO_SIZE(pci_dev) \
+	(__CHK_IO_SIZE(((pci_dev)->device << 16) | (pci_dev)->vendor, \
+	(pci_dev)->revision))
 
 /* Sten Check */
 #define DEVICE net_device
@@ -205,7 +206,7 @@
 
 struct dmfe_board_info {
 	u32 chip_id;			/* Chip vendor/Device ID */
-	u32 chip_revision;		/* Chip revision */
+	u8 chip_revision;		/* Chip revision */
 	struct DEVICE *next_dev;	/* next device */
 	struct pci_dev *pdev;		/* PCI device */
 	spinlock_t lock;
@@ -359,7 +360,7 @@
 {
 	struct dmfe_board_info *db;	/* board information structure */
 	struct net_device *dev;
-	u32 dev_rev, pci_pmr;
+	u32 pci_pmr;
 	int i, err;
 
 	DMFE_DBUG(0, "dmfe_init_one()", 0);
@@ -392,10 +393,7 @@
 		goto err_out_disable;
 	}
 
-	/* Read Chip revision */
-	pci_read_config_dword(pdev, PCI_REVISION_ID, &dev_rev);
-
-	if (pci_resource_len(pdev, 0) < (CHK_IO_SIZE(pdev, dev_rev)) ) {
+	if (pci_resource_len(pdev, 0) < (CHK_IO_SIZE(pdev)) ) {
 		printk(KERN_ERR DRV_NAME ": Allocated I/O size too small\n");
 		err = -ENODEV;
 		goto err_out_disable;
@@ -433,7 +431,7 @@
 
 	db->chip_id = ent->driver_data;
 	db->ioaddr = pci_resource_start(pdev, 0);
-	db->chip_revision = dev_rev;
+	db->chip_revision = pdev->revision;
 	db->wol_mode = 0;
 
 	db->pdev = pdev;
@@ -455,7 +453,7 @@
 
 	pci_read_config_dword(pdev, 0x50, &pci_pmr);
 	pci_pmr &= 0x70000;
-	if ( (pci_pmr == 0x10000) && (dev_rev == 0x02000031) )
+	if ( (pci_pmr == 0x10000) && (db->chip_revision == 0x31) )
 		db->chip_type = 1;	/* DM9102A E3 */
 	else
 		db->chip_type = 0;
@@ -553,7 +551,7 @@
 
 	/* CR6 operation mode decision */
 	if ( !chkmode || (db->chip_id == PCI_DM9132_ID) ||
-		(db->chip_revision >= 0x02000030) ) {
+		(db->chip_revision >= 0x30) ) {
     		db->cr6_data |= DMFE_TXTH_256;
 		db->cr0_data = CR0_DEFAULT;
 		db->dm910x_chk_mode=4;		/* Enter the normal mode */
@@ -1199,9 +1197,9 @@
 		tmp_cr12 = inb(db->ioaddr + DCR12);	/* DM9102/DM9102A */
 
 	if ( ((db->chip_id == PCI_DM9102_ID) &&
-		(db->chip_revision == 0x02000030)) ||
+		(db->chip_revision == 0x30)) ||
 		((db->chip_id == PCI_DM9132_ID) &&
-		(db->chip_revision == 0x02000010)) ) {
+		(db->chip_revision == 0x10)) ) {
 		/* DM9102A Chip */
 		if (tmp_cr12 & 2)
 			link_ok = 0;
diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c
index 041af63..1a9e911 100644
--- a/drivers/net/tulip/tulip_core.c
+++ b/drivers/net/tulip/tulip_core.c
@@ -1238,7 +1238,6 @@
 	};
 	static int last_irq;
 	static int multiport_cnt;	/* For four-port boards w/one EEPROM */
-	u8 chip_rev;
 	int i, irq;
 	unsigned short sum;
 	unsigned char *ee_data;
@@ -1274,10 +1273,8 @@
 
 	if (pdev->vendor == 0x1282 && pdev->device == 0x9100)
 	{
-		u32 dev_rev;
 		/* Read Chip revision */
-		pci_read_config_dword(pdev, PCI_REVISION_ID, &dev_rev);
-		if(dev_rev < 0x02000030)
+		if (pdev->revision < 0x02000030)
 		{
 			printk(KERN_ERR PFX "skipping early DM9100 with Crc bug (use dmfe)\n");
 			return -ENODEV;
@@ -1360,8 +1357,6 @@
 	if (!ioaddr)
 		goto err_out_free_res;
 
-	pci_read_config_byte (pdev, PCI_REVISION_ID, &chip_rev);
-
 	/*
 	 * initialize private data structure 'tp'
 	 * it is zeroed and aligned in alloc_etherdev
@@ -1382,7 +1377,7 @@
 	tp->flags = tulip_tbl[chip_idx].flags;
 	tp->pdev = pdev;
 	tp->base_addr = ioaddr;
-	tp->revision = chip_rev;
+	tp->revision = pdev->revision;
 	tp->csr0 = csr0;
 	spin_lock_init(&tp->lock);
 	spin_lock_init(&tp->mii_lock);
@@ -1399,7 +1394,7 @@
 		tulip_mwi_config (pdev, dev);
 #else
 	/* MWI is broken for DC21143 rev 65... */
-	if (chip_idx == DC21143 && chip_rev == 65)
+	if (chip_idx == DC21143 && pdev->revision == 65)
 		tp->csr0 &= ~MWI;
 #endif
 
@@ -1640,7 +1635,7 @@
 #else
 		"Port"
 #endif
-		" %#llx,", dev->name, chip_name, chip_rev,
+		" %#llx,", dev->name, chip_name, pdev->revision,
 		(unsigned long long) pci_resource_start(pdev, TULIP_BAR));
 	pci_set_drvdata(pdev, dev);
 
diff --git a/drivers/net/tulip/xircom_cb.c b/drivers/net/tulip/xircom_cb.c
index 2470b1e..79943cd 100644
--- a/drivers/net/tulip/xircom_cb.c
+++ b/drivers/net/tulip/xircom_cb.c
@@ -205,7 +205,6 @@
 {
 	struct net_device *dev = NULL;
 	struct xircom_private *private;
-	unsigned char chip_rev;
 	unsigned long flags;
 	unsigned short tmp16;
 	enter("xircom_probe");
@@ -224,8 +223,6 @@
 	pci_read_config_word (pdev,PCI_STATUS, &tmp16);
 	pci_write_config_word (pdev, PCI_STATUS,tmp16);
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &chip_rev);
-
 	if (!request_region(pci_resource_start(pdev, 0), 128, "xircom_cb")) {
 		printk(KERN_ERR "xircom_probe: failed to allocate io-region\n");
 		return -ENODEV;
@@ -286,7 +283,7 @@
 		goto reg_fail;
 	}
 
-	printk(KERN_INFO "%s: Xircom cardbus revision %i at irq %i \n", dev->name, chip_rev, pdev->irq);
+	printk(KERN_INFO "%s: Xircom cardbus revision %i at irq %i \n", dev->name, pdev->revision, pdev->irq);
 	/* start the transmitter to get a heartbeat */
 	/* TODO: send 2 dummy packets here */
 	transceiver_voodoo(private);
diff --git a/drivers/net/tulip/xircom_tulip_cb.c b/drivers/net/tulip/xircom_tulip_cb.c
index f641729..83d69f1 100644
--- a/drivers/net/tulip/xircom_tulip_cb.c
+++ b/drivers/net/tulip/xircom_tulip_cb.c
@@ -524,7 +524,6 @@
 	int chip_idx = id->driver_data;
 	long ioaddr;
 	int i;
-	u8 chip_rev;
 
 /* when built into the kernel, we only print version if device is found */
 #ifndef MODULE
@@ -620,9 +619,8 @@
 	if (register_netdev(dev))
 		goto err_out_cleardev;
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &chip_rev);
 	printk(KERN_INFO "%s: %s rev %d at %#3lx,",
-	       dev->name, xircom_tbl[chip_idx].chip_name, chip_rev, ioaddr);
+	       dev->name, xircom_tbl[chip_idx].chip_name, pdev->revision, ioaddr);
 	for (i = 0; i < 6; i++)
 		printk("%c%2.2X", i ? ':' : ' ', dev->dev_addr[i]);
 	printk(", IRQ %d.\n", dev->irq);
diff --git a/drivers/net/via-rhine.c b/drivers/net/via-rhine.c
index adea290..73e9c3d 100644
--- a/drivers/net/via-rhine.c
+++ b/drivers/net/via-rhine.c
@@ -622,7 +622,6 @@
 	struct net_device *dev;
 	struct rhine_private *rp;
 	int i, rc;
-	u8 pci_rev;
 	u32 quirks;
 	long pioaddr;
 	long memaddr;
@@ -642,27 +641,25 @@
 		printk(version);
 #endif
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
-
 	io_size = 256;
 	phy_id = 0;
 	quirks = 0;
 	name = "Rhine";
-	if (pci_rev < VTunknown0) {
+	if (pdev->revision < VTunknown0) {
 		quirks = rqRhineI;
 		io_size = 128;
 	}
-	else if (pci_rev >= VT6102) {
+	else if (pdev->revision >= VT6102) {
 		quirks = rqWOL | rqForceReset;
-		if (pci_rev < VT6105) {
+		if (pdev->revision < VT6105) {
 			name = "Rhine II";
 			quirks |= rqStatusWBRace;	/* Rhine-II exclusive */
 		}
 		else {
 			phy_id = 1;	/* Integrated PHY, phy_id fixed to 1 */
-			if (pci_rev >= VT6105_B0)
+			if (pdev->revision >= VT6105_B0)
 				quirks |= rq6patterns;
-			if (pci_rev < VT6105M)
+			if (pdev->revision < VT6105M)
 				name = "Rhine III";
 			else
 				name = "Rhine III (Management Adapter)";
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index b670b97..f331843 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -890,8 +890,7 @@
 
 static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev)
 {
-	if (pci_read_config_byte(pdev, PCI_REVISION_ID, &vptr->rev_id) < 0)
-		return -EIO;
+	vptr->rev_id = pdev->revision;
 
 	pci_set_master(pdev);
 
diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c
index 999bf71..ec1c556 100644
--- a/drivers/net/wan/pc300_drv.c
+++ b/drivers/net/wan/pc300_drv.c
@@ -3439,7 +3439,6 @@
 cpc_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	static int first_time = 1;
-	ucchar cpc_rev_id;
 	int err, eeprom_outdated = 0;
 	ucshort device_id;
 	pc300_t *card;
@@ -3480,7 +3479,6 @@
 	card->hw.falcsize = pci_resource_len(pdev, 4);
 	card->hw.plxphys = pci_resource_start(pdev, 5);
 	card->hw.plxsize = pci_resource_len(pdev, 5);
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &cpc_rev_id);
 
 	switch (device_id) {
 		case PCI_DEVICE_ID_PC300_RX_1:
@@ -3498,7 +3496,7 @@
 	}
 #ifdef PC300_DEBUG_PCI
 	printk("cpc (bus=0x0%x,pci_id=0x%x,", pdev->bus->number, pdev->devfn);
-	printk("rev_id=%d) IRQ%d\n", cpc_rev_id, card->hw.irq);
+	printk("rev_id=%d) IRQ%d\n", pdev->revision, card->hw.irq);
 	printk("cpc:found  ramaddr=0x%08lx plxaddr=0x%08lx "
 	       "ctladdr=0x%08lx falcaddr=0x%08lx\n",
 	       card->hw.ramphys, card->hw.plxphys, card->hw.scaphys,
diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c
index aff05db..dfbd3b0 100644
--- a/drivers/net/wan/pc300too.c
+++ b/drivers/net/wan/pc300too.c
@@ -311,7 +311,6 @@
 					const struct pci_device_id *ent)
 {
 	card_t *card;
-	u8 rev_id;
 	u32 __iomem *p;
 	int i;
 	u32 ramsize;
@@ -366,7 +365,6 @@
 			return -ENOMEM;
 		}
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
 	if (pci_resource_len(pdev, 0) != PC300_PLX_SIZE ||
 	    pci_resource_len(pdev, 2) != PC300_SCA_SIZE ||
 	    pci_resource_len(pdev, 3) < 16384) {
diff --git a/drivers/net/wan/pci200syn.c b/drivers/net/wan/pci200syn.c
index ca06a00..7f720de 100644
--- a/drivers/net/wan/pci200syn.c
+++ b/drivers/net/wan/pci200syn.c
@@ -289,7 +289,6 @@
 					 const struct pci_device_id *ent)
 {
 	card_t *card;
-	u8 rev_id;
 	u32 __iomem *p;
 	int i;
 	u32 ramsize;
@@ -330,7 +329,6 @@
 		return -ENOMEM;
 	}
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
 	if (pci_resource_len(pdev, 0) != PCI200SYN_PLX_SIZE ||
 	    pci_resource_len(pdev, 2) != PCI200SYN_SCA_SIZE ||
 	    pci_resource_len(pdev, 3) < 16384) {
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c
index ef6b253..c5d6753 100644
--- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c
@@ -3741,10 +3741,8 @@
 	                          &bcm->board_type);
 	if (err)
 		goto err_iounmap;
-	err = bcm43xx_pci_read_config16(bcm, PCI_REVISION_ID,
-	                          &bcm->board_revision);
-	if (err)
-		goto err_iounmap;
+
+	bcm->board_revision = bcm->pci_dev->revision;
 
 	err = bcm43xx_chipset_attach(bcm);
 	if (err)
diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c
index 5617cfd..d590a99 100644
--- a/drivers/pci/hotplug/cpqphp_core.c
+++ b/drivers/pci/hotplug/cpqphp_core.c
@@ -796,7 +796,6 @@
 	u8 num_of_slots = 0;
 	u8 hp_slot = 0;
 	u8 device;
-	u8 rev;
 	u8 bus_cap;
 	u16 temp_word;
 	u16 vendor_id;
@@ -823,9 +822,8 @@
 	}
 	dbg("Vendor ID: %x\n", vendor_id);
 
-	rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
-	dbg("revision: %d\n", rev);
-	if (rc || ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!rev))) {
+	dbg("revision: %d\n", pdev->revision);
+	if ((vendor_id == PCI_VENDOR_ID_COMPAQ) && (!pdev->revision)) {
 		err(msg_HPC_rev_error);
 		rc = -ENODEV;
 		goto err_disable_device;
@@ -836,7 +834,7 @@
 	 * For Intel, each SSID bit identifies a PHP capability.
 	 * Also Intel HPC's may have RID=0.
 	 */
-	if ((rev > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) {
+	if ((pdev->revision > 2) || (vendor_id == PCI_VENDOR_ID_INTEL)) {
 		// TODO: This code can be made to support non-Compaq or Intel subsystem IDs
 		rc = pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &subsystem_vid);
 		if (rc) {
@@ -870,7 +868,7 @@
 
 		switch (subsystem_vid) {
 			case PCI_VENDOR_ID_COMPAQ:
-				if (rev >= 0x13) { /* CIOBX */
+				if (pdev->revision >= 0x13) { /* CIOBX */
 					ctrl->push_flag = 1;
 					ctrl->slot_switch_type = 1;
 					ctrl->push_button = 1;
@@ -1075,7 +1073,7 @@
 	memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus));
 
 	ctrl->bus = pdev->bus->number;
-	ctrl->rev = rev;
+	ctrl->rev = pdev->revision;
 	dbg("bus device function rev: %d %d %d %d\n", ctrl->bus,
 		PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), ctrl->rev);
 
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 75bd6a8..f75ade6 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -587,10 +587,7 @@
  */
 static void __devinit quirk_amd_ioapic(struct pci_dev *dev)
 {
-	u8 rev;
-
-	pci_read_config_byte(dev, PCI_REVISION_ID, &rev);
-	if (rev >= 0x02) {
+	if (dev->revision >= 0x02) {
 		printk(KERN_WARNING "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n");
 		printk(KERN_WARNING "        : booting with the \"noapic\" option.\n");
 	}
@@ -610,13 +607,12 @@
 #define AMD8131_NIOAMODE_BIT 0
 static void quirk_amd_8131_ioapic(struct pci_dev *dev)
 { 
-        unsigned char revid, tmp;
+        unsigned char tmp;
         
         if (nr_ioapics == 0) 
                 return;
 
-        pci_read_config_byte(dev, PCI_REVISION_ID, &revid);
-        if (revid == AMD8131_revA0 || revid == AMD8131_revB0) {
+        if (dev->revision == AMD8131_revA0 || dev->revision == AMD8131_revB0) {
                 printk(KERN_INFO "Fixing up AMD8131 IOAPIC mode\n"); 
                 pci_read_config_byte( dev, AMD8131_MISC, &tmp);
                 tmp &= ~(1 << AMD8131_NIOAMODE_BIT);
@@ -859,10 +855,8 @@
 static void quirk_disable_pxb(struct pci_dev *pdev)
 {
 	u16 config;
-	u8 rev;
 	
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
-	if (rev != 0x04)		/* Only C0 requires this */
+	if (pdev->revision != 0x04)		/* Only C0 requires this */
 		return;
 	pci_read_config_word(pdev, 0x40, &config);
 	if (config & (1<<6)) {
diff --git a/drivers/scsi/aic94xx/aic94xx_init.c b/drivers/scsi/aic94xx/aic94xx_init.c
index 27852b4..1c0d757 100644
--- a/drivers/scsi/aic94xx/aic94xx_init.c
+++ b/drivers/scsi/aic94xx/aic94xx_init.c
@@ -223,13 +223,8 @@
 {
 	int err, i;
 
-	err = pci_read_config_byte(asd_ha->pcidev, PCI_REVISION_ID,
-				   &asd_ha->revision_id);
-	if (err) {
-		asd_printk("couldn't read REVISION ID register of %s\n",
-			   pci_name(asd_ha->pcidev));
-		goto Err;
-	}
+	asd_ha->revision_id = asd_ha->pcidev->revision;
+
 	err = -ENODEV;
 	if (asd_ha->revision_id < AIC9410_DEV_REV_B0) {
 		asd_printk("%s is revision %s (%X), which is not supported\n",
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index fa6ff29..8133071 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -5367,18 +5367,12 @@
  **/
 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
 {
-	u8 rev_id;
 	int i;
 
-	if (ioa_cfg->type == 0x5702) {
-		if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
-					 &rev_id) == PCIBIOS_SUCCESSFUL) {
-			if (rev_id < 4) {
-				for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
-					if (__is_processor(ipr_blocked_processors[i]))
-						return 1;
-				}
-			}
+	if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
+		for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
+			if (__is_processor(ipr_blocked_processors[i]))
+				return 1;
 		}
 	}
 	return 0;
@@ -7535,13 +7529,7 @@
 	else
 		ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
 
-	rc = pci_read_config_byte(pdev, PCI_REVISION_ID, &ioa_cfg->revid);
-
-	if (rc != PCIBIOS_SUCCESSFUL) {
-		dev_err(&pdev->dev, "Failed to read PCI revision ID\n");
-		rc = -EIO;
-		goto out_scsi_host_put;
-	}
+	ioa_cfg->revid = pdev->revision;
 
 	ipr_regs_pci = pci_resource_start(pdev, 0);
 
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index 8b704f7..40f148e 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -7148,7 +7148,6 @@
 	uint32_t mem_addr;
 	uint32_t io_len;
 	uint32_t mem_len;
-	uint8_t revision_id;
 	uint8_t bus;
 	uint8_t func;
 	uint8_t irq;
@@ -7227,12 +7226,6 @@
 		}
 	}
 
-	/* get the revision ID */
-	if (pci_read_config_byte(pci_dev, PCI_REVISION_ID, &revision_id)) {
-		IPS_PRINTK(KERN_WARNING, pci_dev, "Can't get revision id.\n");
-		return -1;
-	}
-
 	subdevice_id = pci_dev->subsystem_device;
 
 	/* found a controller */
@@ -7258,7 +7251,7 @@
 	ha->mem_ptr = mem_ptr;
 	ha->ioremap_ptr = ioremap_ptr;
 	ha->host_num = (uint32_t) index;
-	ha->revision_id = revision_id;
+	ha->revision_id = pci_dev->revision;
 	ha->slot_num = PCI_SLOT(pci_dev->devfn);
 	ha->device_id = pci_dev->device;
 	ha->subdevice_id = subdevice_id;
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 2a45aec..cf94f86 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -296,7 +296,7 @@
 	d &= ~PCI_ROM_ADDRESS_ENABLE;
 	pci_write_config_dword(ha->pdev, PCI_ROM_ADDRESS, d);
 
-	pci_read_config_word(ha->pdev, PCI_REVISION_ID, &ha->chip_revision);
+	ha->chip_revision = ha->pdev->revision;
 
 	/* Get PCI bus information. */
 	spin_lock_irqsave(&ha->hardware_lock, flags);
diff --git a/drivers/serial/jsm/jsm_driver.c b/drivers/serial/jsm/jsm_driver.c
index 81792e6..6767ee3 100644
--- a/drivers/serial/jsm/jsm_driver.c
+++ b/drivers/serial/jsm/jsm_driver.c
@@ -88,7 +88,7 @@
 	spin_lock_init(&brd->bd_intr_lock);
 
 	/* store which revision we have */
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
+	brd->rev = pdev->revision;
 
 	brd->irq = pdev->irq;
 
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 12edc72..966965f 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -149,8 +149,7 @@
 		 * fixed in newer silicon.
 		 */
 		case 0x0068:
-			pci_read_config_dword(pdev, PCI_REVISION_ID, &temp);
-			if ((temp & 0xff) < 0xa4)
+			if (pdev->revision < 0xa4)
 				ehci->no_selective_suspend = 1;
 			break;
 		}
diff --git a/drivers/video/kyro/STG4000InitDevice.c b/drivers/video/kyro/STG4000InitDevice.c
index ab5285a..1d3f2080 100644
--- a/drivers/video/kyro/STG4000InitDevice.c
+++ b/drivers/video/kyro/STG4000InitDevice.c
@@ -247,7 +247,6 @@
 	u32 ulCoreClock;
 	u32 tmp;
 	u32 ulChipSpeed;
-	u8 rev;
 
 	STG_WRITE_REG(IntMask, 0xFFFF);
 
@@ -276,9 +275,9 @@
 		      PMX2_SOFTRESET_ROM_RST);
 
 	pci_read_config_word(pDev, PCI_CONFIG_SUBSYS_ID, &sub);
-	pci_read_config_byte(pDev, PCI_REVISION_ID, &rev);
 
-	ulChipSpeed = InitSDRAMRegisters(pSTGReg, (u32)sub, (u32)rev);
+	ulChipSpeed = InitSDRAMRegisters(pSTGReg, (u32)sub,
+		                         (u32)pDev->revision);
 
 	if (ulChipSpeed == 0)
 		return -EINVAL;
diff --git a/drivers/video/matrox/matroxfb_base.c b/drivers/video/matrox/matroxfb_base.c
index c8559a7..886e475 100644
--- a/drivers/video/matrox/matroxfb_base.c
+++ b/drivers/video/matrox/matroxfb_base.c
@@ -1994,7 +1994,6 @@
 
 static int matroxfb_probe(struct pci_dev* pdev, const struct pci_device_id* dummy) {
 	struct board* b;
-	u_int8_t rev;
 	u_int16_t svid;
 	u_int16_t sid;
 	struct matrox_fb_info* minfo;
@@ -2005,11 +2004,10 @@
 #endif
 	DBG(__FUNCTION__)
 
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
 	svid = pdev->subsystem_vendor;
 	sid = pdev->subsystem_device;
 	for (b = dev_list; b->vendor; b++) {
-		if ((b->vendor != pdev->vendor) || (b->device != pdev->device) || (b->rev < rev)) continue;
+		if ((b->vendor != pdev->vendor) || (b->device != pdev->device) || (b->rev < pdev->revision)) continue;
 		if (b->svid)
 			if ((b->svid != svid) || (b->sid != sid)) continue;
 		break;
diff --git a/drivers/video/sis/sis_main.c b/drivers/video/sis/sis_main.c
index a30e1e1..93d07ef 100644
--- a/drivers/video/sis/sis_main.c
+++ b/drivers/video/sis/sis_main.c
@@ -5789,7 +5789,7 @@
 	ivideo->warncount = 0;
 	ivideo->chip_id = pdev->device;
 	ivideo->chip_vendor = pdev->vendor;
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &ivideo->revision_id);
+	ivideo->revision_id = pdev->revision;
 	ivideo->SiS_Pr.ChipRevision = ivideo->revision_id;
 	pci_read_config_word(pdev, PCI_COMMAND, &reg16);
 	ivideo->sisvga_enabled = reg16 & 0x01;
diff --git a/drivers/video/sstfb.c b/drivers/video/sstfb.c
index 62fa550..5eff28ce 100644
--- a/drivers/video/sstfb.c
+++ b/drivers/video/sstfb.c
@@ -1348,7 +1348,7 @@
 	f_ddprintk("found device : %s\n", spec->name);
 
 	par->dev = pdev;
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &par->revision);
+	par->revision = pdev->revision;
 
 	fix->mmio_start = pci_resource_start(pdev,0);
 	fix->mmio_len	= 0x400000;
diff --git a/drivers/video/tgafb.c b/drivers/video/tgafb.c
index f0fde6e..5c0dab6 100644
--- a/drivers/video/tgafb.c
+++ b/drivers/video/tgafb.c
@@ -1625,8 +1625,7 @@
 	par->tga_regs_base = mem_base + TGA_REGS_OFFSET;
 	par->tga_type = tga_type;
 	if (tga_bus_pci)
-		pci_read_config_byte(to_pci_dev(dev), PCI_REVISION_ID,
-				     &par->tga_chip_rev);
+		par->tga_chip_rev = (to_pci_dev(dev))->revision;
 	if (tga_bus_tc)
 		par->tga_chip_rev = TGA_READ_REG(par, TGA_START_REG) & 0xff;
 
diff --git a/sound/oss/emu10k1/main.c b/sound/oss/emu10k1/main.c
index 16ac025..5058411 100644
--- a/sound/oss/emu10k1/main.c
+++ b/sound/oss/emu10k1/main.c
@@ -1302,7 +1302,7 @@
 		goto err_irq;
 	}
 
-	pci_read_config_byte(pci_dev, PCI_REVISION_ID, &card->chiprev);
+	card->chiprev = pci_dev->revision;
 	pci_read_config_word(pci_dev, PCI_SUBSYSTEM_ID, &card->model);
 
 	printk(KERN_INFO "emu10k1: %s rev %d model %#04x found, IO at %#04lx-%#04lx, IRQ %d\n",
diff --git a/sound/oss/es1371.c b/sound/oss/es1371.c
index 593a3aa..5264857 100644
--- a/sound/oss/es1371.c
+++ b/sound/oss/es1371.c
@@ -2894,7 +2894,7 @@
 	s->irq = pcidev->irq;
 	s->vendor = pcidev->vendor;
 	s->device = pcidev->device;
-	pci_read_config_byte(pcidev, PCI_REVISION_ID, &s->rev);
+	s->rev = pcidev->revision;
 	s->codec->private_data = s;
 	s->codec->id = 0;
 	s->codec->codec_read = rdcodec;
diff --git a/sound/pci/ali5451/ali5451.c b/sound/pci/ali5451/ali5451.c
index cb59f99..41543a4 100644
--- a/sound/pci/ali5451/ali5451.c
+++ b/sound/pci/ali5451/ali5451.c
@@ -2218,7 +2218,7 @@
 	codec->card = card;
 	codec->pci = pci;
 	codec->irq = -1;
-	pci_read_config_byte(pci, PCI_REVISION_ID, &codec->revision);
+	codec->revision = pci->revision;
 	codec->spdif_support = spdif_support;
 
 	if (pcm_streams < 1)
diff --git a/sound/pci/atiixp.c b/sound/pci/atiixp.c
index 7d8053b..89184a4 100644
--- a/sound/pci/atiixp.c
+++ b/sound/pci/atiixp.c
@@ -1639,15 +1639,12 @@
 {
 	struct snd_card *card;
 	struct atiixp *chip;
-	unsigned char revision;
 	int err;
 
 	card = snd_card_new(index, id, THIS_MODULE, 0);
 	if (card == NULL)
 		return -ENOMEM;
 
-	pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
-
 	strcpy(card->driver, spdif_aclink ? "ATIIXP" : "ATIIXP-SPDMA");
 	strcpy(card->shortname, "ATI IXP");
 	if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
@@ -1670,7 +1667,8 @@
 	snd_atiixp_chip_start(chip);
 
 	snprintf(card->longname, sizeof(card->longname),
-		 "%s rev %x with %s at %#lx, irq %i", card->shortname, revision,
+		 "%s rev %x with %s at %#lx, irq %i", card->shortname,
+		 pci->revision,
 		 chip->ac97[0] ? snd_ac97_get_short_name(chip->ac97[0]) : "?",
 		 chip->addr, chip->irq);
 
diff --git a/sound/pci/atiixp_modem.c b/sound/pci/atiixp_modem.c
index 904023f..ce752f8 100644
--- a/sound/pci/atiixp_modem.c
+++ b/sound/pci/atiixp_modem.c
@@ -1283,15 +1283,12 @@
 {
 	struct snd_card *card;
 	struct atiixp_modem *chip;
-	unsigned char revision;
 	int err;
 
 	card = snd_card_new(index, id, THIS_MODULE, 0);
 	if (card == NULL)
 		return -ENOMEM;
 
-	pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
-
 	strcpy(card->driver, "ATIIXP-MODEM");
 	strcpy(card->shortname, "ATI IXP Modem");
 	if ((err = snd_atiixp_create(card, pci, &chip)) < 0)
@@ -1312,7 +1309,7 @@
 	snd_atiixp_chip_start(chip);
 
 	sprintf(card->longname, "%s rev %x at 0x%lx, irq %i",
-		card->shortname, revision, chip->addr, chip->irq);
+		card->shortname, pci->revision, chip->addr, chip->irq);
 
 	if ((err = snd_card_register(card)) < 0)
 		goto __error;
diff --git a/sound/pci/au88x0/au88x0.c b/sound/pci/au88x0/au88x0.c
index 238154b..5ec1b6f 100644
--- a/sound/pci/au88x0/au88x0.c
+++ b/sound/pci/au88x0/au88x0.c
@@ -341,11 +341,7 @@
 		snd_card_free(card);
 		return err;
 	}
-	if ((err = pci_read_config_byte(pci, PCI_REVISION_ID,
-				  &(chip->rev))) < 0) {
-		snd_card_free(card);
-		return err;
-	}
+	chip->rev = pci->revision;
 #ifdef CHIP_AU8830
 	if ((chip->rev) != 0xfe && (chip->rev) != 0xfa) {
 		printk(KERN_ALERT
diff --git a/sound/pci/ca0106/ca0106.h b/sound/pci/ca0106/ca0106.h
index aaac6e5..a0420bc 100644
--- a/sound/pci/ca0106/ca0106.h
+++ b/sound/pci/ca0106/ca0106.h
@@ -590,7 +590,6 @@
 	struct resource *res_port;
 	int irq;
 
-	unsigned char revision;		/* chip revision */
 	unsigned int serial;            /* serial number */
 	unsigned short model;		/* subsystem id */
 
diff --git a/sound/pci/ca0106/ca0106_main.c b/sound/pci/ca0106/ca0106_main.c
index 48f3f17..9fd7b8a 100644
--- a/sound/pci/ca0106/ca0106_main.c
+++ b/sound/pci/ca0106/ca0106_main.c
@@ -1293,13 +1293,12 @@
 	}
 
 	pci_set_master(pci);
-	/* read revision & serial */
-	pci_read_config_byte(pci, PCI_REVISION_ID, &chip->revision);
+	/* read serial */
 	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
 	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
 #if 1
 	printk(KERN_INFO "snd-ca0106: Model %04x Rev %08x Serial %08x\n", chip->model,
-	       chip->revision, chip->serial);
+	       pci->revision, chip->serial);
 #endif
 	strcpy(card->driver, "CA0106");
 	strcpy(card->shortname, "CA0106");
diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c
index dbc805c..4a9b59a 100644
--- a/sound/pci/emu10k1/emu10k1_main.c
+++ b/sound/pci/emu10k1/emu10k1_main.c
@@ -1511,7 +1511,6 @@
 	struct snd_emu10k1 *emu;
 	int idx, err;
 	int is_audigy;
-	unsigned char revision;
 	unsigned int silent_page;
 	const struct snd_emu_chip_details *c;
 	static struct snd_device_ops ops = {
@@ -1543,8 +1542,7 @@
 	emu->synth = NULL;
 	emu->get_synth_voice = NULL;
 	/* read revision & serial */
-	pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
-	emu->revision = revision;
+	emu->revision = pci->revision;
 	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &emu->serial);
 	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &emu->model);
 	snd_printdd("vendor=0x%x, device=0x%x, subsystem_vendor_id=0x%x, subsystem_id=0x%x\n",pci->vendor, pci->device, emu->serial, emu->model);
diff --git a/sound/pci/emu10k1/emu10k1x.c b/sound/pci/emu10k1/emu10k1x.c
index bb0fec7..e4af7a9 100644
--- a/sound/pci/emu10k1/emu10k1x.c
+++ b/sound/pci/emu10k1/emu10k1x.c
@@ -942,7 +942,7 @@
 
 	pci_set_master(pci);
 	/* read revision & serial */
-	pci_read_config_byte(pci, PCI_REVISION_ID, &chip->revision);
+	chip->revision = pci->revision;
 	pci_read_config_dword(pci, PCI_SUBSYSTEM_VENDOR_ID, &chip->serial);
 	pci_read_config_word(pci, PCI_SUBSYSTEM_ID, &chip->model);
 	snd_printk(KERN_INFO "Model %04x Rev %08x Serial %08x\n", chip->model,
diff --git a/sound/pci/ens1370.c b/sound/pci/ens1370.c
index 6a0ddcf..7c40396 100644
--- a/sound/pci/ens1370.c
+++ b/sound/pci/ens1370.c
@@ -2110,7 +2110,6 @@
 				     struct ensoniq ** rensoniq)
 {
 	struct ensoniq *ensoniq;
-	unsigned char cmdb;
 	int err;
 	static struct snd_device_ops ops = {
 		.dev_free =	snd_ensoniq_dev_free,
@@ -2151,8 +2150,7 @@
 	}
 #endif
 	pci_set_master(pci);
-	pci_read_config_byte(pci, PCI_REVISION_ID, &cmdb);
-	ensoniq->rev = cmdb;
+	ensoniq->rev = pci->revision;
 #ifdef CHIP1370
 #if 0
 	ensoniq->ctrl = ES_1370_CDC_EN | ES_1370_SERR_DISABLE |
diff --git a/sound/pci/fm801.c b/sound/pci/fm801.c
index 6dc578b..1101517 100644
--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -1369,7 +1369,6 @@
 				      struct fm801 ** rchip)
 {
 	struct fm801 *chip;
-	unsigned char rev;
 	int err;
 	static struct snd_device_ops ops = {
 		.dev_free =	snd_fm801_dev_free,
@@ -1405,8 +1404,7 @@
 		pci_set_master(pci);
 	}
 
-	pci_read_config_byte(pci, PCI_REVISION_ID, &rev);
-	if (rev >= 0xb1)	/* FM801-AU */
+	if (pci->revision >= 0xb1)	/* FM801-AU */
 		chip->multichannel = 1;
 
 	snd_fm801_chip_init(chip, 0);
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c
index a289922..50c9f92 100644
--- a/sound/pci/via82xx.c
+++ b/sound/pci/via82xx.c
@@ -2431,7 +2431,6 @@
 {
 	struct snd_card *card;
 	struct via82xx *chip;
-	unsigned char revision;
 	int chip_type = 0, card_type;
 	unsigned int i;
 	int err;
@@ -2441,18 +2440,17 @@
 		return -ENOMEM;
 
 	card_type = pci_id->driver_data;
-	pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
 	switch (card_type) {
 	case TYPE_CARD_VIA686:
 		strcpy(card->driver, "VIA686A");
-		sprintf(card->shortname, "VIA 82C686A/B rev%x", revision);
+		sprintf(card->shortname, "VIA 82C686A/B rev%x", pci->revision);
 		chip_type = TYPE_VIA686;
 		break;
 	case TYPE_CARD_VIA8233:
 		chip_type = TYPE_VIA8233;
-		sprintf(card->shortname, "VIA 823x rev%x", revision);
+		sprintf(card->shortname, "VIA 823x rev%x", pci->revision);
 		for (i = 0; i < ARRAY_SIZE(via823x_cards); i++) {
-			if (revision == via823x_cards[i].revision) {
+			if (pci->revision == via823x_cards[i].revision) {
 				chip_type = via823x_cards[i].type;
 				strcpy(card->shortname, via823x_cards[i].name);
 				break;
@@ -2460,7 +2458,7 @@
 		}
 		if (chip_type != TYPE_VIA8233A) {
 			if (dxs_support == VIA_DXS_AUTO)
-				dxs_support = check_dxs_list(pci, revision);
+				dxs_support = check_dxs_list(pci, pci->revision);
 			/* force to use VIA8233 or 8233A model according to
 			 * dxs_support module option
 			 */
@@ -2471,7 +2469,7 @@
 		}
 		if (chip_type == TYPE_VIA8233A)
 			strcpy(card->driver, "VIA8233A");
-		else if (revision >= VIA_REV_8237)
+		else if (pci->revision >= VIA_REV_8237)
 			strcpy(card->driver, "VIA8237"); /* no slog assignment */
 		else
 			strcpy(card->driver, "VIA8233");
@@ -2482,7 +2480,7 @@
 		goto __error;
 	}
 		
-	if ((err = snd_via82xx_create(card, pci, chip_type, revision,
+	if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
 				      ac97_clock, &chip)) < 0)
 		goto __error;
 	card->private_data = chip;
diff --git a/sound/pci/via82xx_modem.c b/sound/pci/via82xx_modem.c
index b338e15..8cbf8eb 100644
--- a/sound/pci/via82xx_modem.c
+++ b/sound/pci/via82xx_modem.c
@@ -1162,7 +1162,6 @@
 {
 	struct snd_card *card;
 	struct via82xx_modem *chip;
-	unsigned char revision;
 	int chip_type = 0, card_type;
 	unsigned int i;
 	int err;
@@ -1172,7 +1171,6 @@
 		return -ENOMEM;
 
 	card_type = pci_id->driver_data;
-	pci_read_config_byte(pci, PCI_REVISION_ID, &revision);
 	switch (card_type) {
 	case TYPE_CARD_VIA82XX_MODEM:
 		strcpy(card->driver, "VIA82XX-MODEM");
@@ -1184,7 +1182,7 @@
 		goto __error;
 	}
 		
-	if ((err = snd_via82xx_create(card, pci, chip_type, revision,
+	if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision,
 				      ac97_clock, &chip)) < 0)
 		goto __error;
 	card->private_data = chip;
diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c
index ea861bc..ab7a81c 100644
--- a/sound/pci/ymfpci/ymfpci_main.c
+++ b/sound/pci/ymfpci/ymfpci_main.c
@@ -2404,7 +2404,7 @@
 	chip->pci = pci;
 	chip->irq = -1;
 	chip->device_id = pci->device;
-	pci_read_config_byte(pci, PCI_REVISION_ID, &chip->rev);
+	chip->rev = pci->revision;
 	chip->reg_area_phys = pci_resource_start(pci, 0);
 	chip->reg_area_virt = ioremap_nocache(chip->reg_area_phys, 0x8000);
 	pci_set_master(pci);