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/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);