[PATCH] libata-eh: Remove layering violation and duplication when handling absent ports
This removes the layering violation where drivers have to fiddle
directly with EH flags. Instead we now recognize -ENOENT means "no port"
and do the handling in the core code.
This also removes an instance of a call to disable the port, and an
identical printk from each driver doing this. Even better - future rule
changes will be in one place only.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index 3293cf9..793a5e1 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -25,7 +25,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_amd"
-#define DRV_VERSION "0.2.3"
+#define DRV_VERSION "0.2.4"
/**
* timing_setup - shared timing computation and load
@@ -137,11 +137,8 @@
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
u8 ata66;
- if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no])) {
- ata_port_disable(ap);
- printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
- return 0;
- }
+ if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no]))
+ return -ENOENT;
pci_read_config_byte(pdev, 0x42, &ata66);
if (ata66 & bitmask[ap->port_no])
@@ -167,11 +164,9 @@
{ 0x40, 1, 0x01, 0x01 }
};
- if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no])) {
- ata_port_disable(ap);
- printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
- return 0;
- }
+ if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no]))
+ return -ENOENT;
+
/* No host side cable detection */
ap->cbl = ATA_CBL_PATA80;
return ata_std_prereset(ap);
@@ -262,12 +257,8 @@
u8 ata66;
u16 udma;
- if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no])) {
- ata_port_disable(ap);
- printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
- return 0;
- }
-
+ if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no]))
+ return -ENOENT;
pci_read_config_byte(pdev, 0x52, &ata66);
if (ata66 & bitmask[ap->port_no])