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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-10-16 22:29:56 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2007-10-16 22:29:56 +0200
commit1c54a93d4de34c87be9c63fe5094157e10995d6b (patch)
tree9da94f64f4d432ca222547f555c9c1bb10bf2e25 /drivers/ide/pci/it8213.c
parent3135469e1f679b1728fa047ed43b0c63cdf50c84 (diff)
it8213/piix/slc90e66: "de-couple" PIO and UDMA modes
Don't force PIO4 when programming UDMA mode (suggested by Sergei). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/it8213.c')
-rw-r--r--drivers/ide/pci/it8213.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index 069152dd469..2102167e4f0 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -93,7 +93,7 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
int w_flag = 0x10 << drive->dn;
int u_speed = 0;
u16 reg4042, reg4a;
- u8 reg48, reg54, reg55, pio;
+ u8 reg48, reg54, reg55;
pci_read_config_word(dev, maslave, &reg4042);
pci_read_config_byte(dev, 0x48, &reg48);
@@ -134,10 +134,9 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
pci_write_config_byte(dev, 0x54, reg54 | v_flag);
} else
pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
-
- pio = 4;
} else {
const u8 mwdma_to_pio[] = { 0, 3, 4 };
+ u8 pio;
if (reg48 & u_flag)
pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
@@ -152,9 +151,9 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
else
pio = 2; /* only SWDMA2 is allowed */
- }
- it8213_set_pio_mode(drive, pio);
+ it8213_set_pio_mode(drive, pio);
+ }
}
/**