pata_hpt366: remove redundant code

There's no need to clear the fast interrupt bit in hpt366_set_mode()
since we're doing it in hpt366_init_chipset() already.

While at it, rename 'addr1' local variable to 'addr' and
exclude 'ap->port_no' from its calculation as HPT36x are
single-channel-per-function chips.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 4 insertions, 13 deletions

diff --git a/drivers/ata/pata_hpt366.c b/drivers/ata/pata_hpt366.c
index 0bd48e8f21bd..f6b285890ae9 100644
--- a/drivers/ata/pata_hpt366.c
+++ b/drivers/ata/pata_hpt366.c
@@ -27,7 +27,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME        "pata_hpt366"
-#define DRV_VERSION     "0.6.7"
+#define DRV_VERSION     "0.6.8"
 
 struct hpt_clock {
         u8      xfer_mode;
@@ -207,17 +207,8 @@ static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev,
 {
         struct hpt_clock *clocks = ap->host->private_data;
         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
-        u32 addr1 = 0x40 + 4 * (adev->devno + 2 * ap->port_no);
-        u32 addr2 = 0x51 + 4 * ap->port_no;
+        u32 addr = 0x40 + 4 * adev->devno;
         u32 mask, reg;
-        u8 fast;
-
-        /* Fast interrupt prediction disable, hold off interrupt disable */
-        pci_read_config_byte(pdev, addr2, &fast);
-        if (fast & 0x80) {
-                fast &= ~0x80;
-                pci_write_config_byte(pdev, addr2, fast);
-        }
 
         /* determine timing mask and find matching clock entry */
         if (mode < XFER_MW_DMA_0)
@@ -240,9 +231,9 @@ static void hpt366_set_mode(struct ata_port *ap, struct ata_device *adev,
          * on-chip PIO FIFO/buffer (and PIO MST mode as well) to avoid
          * problems handling I/O errors later.
          */
-        pci_read_config_dword(pdev, addr1, &reg);
+        pci_read_config_dword(pdev, addr, &reg);
         reg = ((reg & ~mask) | (clocks->timing & mask)) & ~0xc0000000;
-        pci_write_config_dword(pdev, addr1, reg);
+        pci_write_config_dword(pdev, addr, reg);
 }
 
 /**