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hpt34x: hpt34x_tune_chipset() (->speedproc) fix 

* remember to clear reg2 bits for the current device before setting mode
* remove no longer needed hpt34x_clear_chipset()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-02-17 02:40:20 +01:00
parent 8a03d9a498
commit 296d9bcc00
1 changed files with 1 additions and 16 deletions
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17
drivers/ide/pci/hpt34x.c
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@ -48,19 +48,6 @@ static u8 hpt34x_ratemask (ide_drive_t *drive)
return 1;
}
static void hpt34x_clear_chipset (ide_drive_t *drive)
{
struct pci_dev *dev = HWIF(drive)->pci_dev;
u32 reg1 = 0, tmp1 = 0, reg2 = 0, tmp2 = 0;
pci_read_config_dword(dev, 0x44, &reg1);
pci_read_config_dword(dev, 0x48, &reg2);
tmp1 = ((0x00 << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn))));
tmp2 = (reg2 & ~(0x11 << drive->dn));
pci_write_config_dword(dev, 0x44, tmp1);
pci_write_config_dword(dev, 0x48, tmp2);
}
static int hpt34x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
{
struct pci_dev *dev = HWIF(drive)->pci_dev;
@ -81,7 +68,7 @@ static int hpt34x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
pci_read_config_dword(dev, 0x44, &reg1);
pci_read_config_dword(dev, 0x48, &reg2);
tmp1 = ((lo_speed << (3*drive->dn)) | (reg1 & ~(7 << (3*drive->dn))));
tmp2 = ((hi_speed << drive->dn) | reg2);
tmp2 = ((hi_speed << drive->dn) | (reg2 & ~(0x11 << drive->dn)));
pci_write_config_dword(dev, 0x44, tmp1);
pci_write_config_dword(dev, 0x48, tmp2);
@ -99,7 +86,6 @@ static int hpt34x_tune_chipset (ide_drive_t *drive, u8 xferspeed)
static void hpt34x_tune_drive (ide_drive_t *drive, u8 pio)
{
pio = ide_get_best_pio_mode(drive, pio, 5, NULL);
hpt34x_clear_chipset(drive);
(void) hpt34x_tune_chipset(drive, (XFER_PIO_0 + pio));
}
@ -117,7 +103,6 @@ static int config_chipset_for_dma (ide_drive_t *drive)
if (!(speed))
return 0;
hpt34x_clear_chipset(drive);
(void) hpt34x_tune_chipset(drive, speed);
return ide_dma_enable(drive);
}