Helps for PATA but SATA bridged devices lie and always set all the bits
so will need the error handling fixes from Tejun.
Signed-off-by: Alan Cox <[email protected]>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.19-rc4-mm1/drivers/ata/pata_hpt37x.c linux-2.6.19-rc4-mm1/drivers/ata/pata_hpt37x.c
--- linux.vanilla-2.6.19-rc4-mm1/drivers/ata/pata_hpt37x.c 2006-10-31 21:11:29.000000000 +0000
+++ linux-2.6.19-rc4-mm1/drivers/ata/pata_hpt37x.c 2006-11-03 11:26:29.000000000 +0000
@@ -25,7 +25,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_hpt37x"
-#define DRV_VERSION "0.5"
+#define DRV_VERSION "0.5.1"
struct hpt_clock {
u8 xfer_speed;
@@ -453,7 +453,13 @@
{
u8 scr2, ata66;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
-
+ static const struct pci_bits hpt37x_enable_bits[] = {
+ { 0x50, 1, 0x04, 0x04 },
+ { 0x54, 1, 0x04, 0x04 }
+ };
+ if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
+ return -ENOENT;
+
pci_read_config_byte(pdev, 0x5B, &scr2);
pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
/* Cable register now active */
@@ -488,10 +499,17 @@
static int hpt374_pre_reset(struct ata_port *ap)
{
+ static const struct pci_bits hpt37x_enable_bits[] = {
+ { 0x50, 1, 0x04, 0x04 },
+ { 0x54, 1, 0x04, 0x04 }
+ };
u16 mcr3, mcr6;
u8 ata66;
-
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+
+ if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
+ return -ENOENT;
+
/* Do the extra channel work */
pci_read_config_word(pdev, 0x52, &mcr3);
pci_read_config_word(pdev, 0x56, &mcr6);
-
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