From b5bf24b94c65536d3cc2bf9039ab05b3967f7b7f Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
Date: Wed, 8 Nov 2006 16:18:26 +0000
Subject: [PATCH] [PATCH] hpt37x: Check the enablebits
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 <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---
drivers/ata/pata_hpt37x.c | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c
index 7350443948c17..fce3fcdc7e791 100644
--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -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 @@ static int hpt37x_pre_reset(struct ata_port *ap)
{
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 +494,17 @@ static void hpt37x_error_handler(struct ata_port *ap)
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);
--
2.30.2