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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-11 23:54:01 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-10-11 23:54:01 +0200 |
| commit | 90986028c98be10807bb6f48e883f33fa20e5499 (patch) | |
| tree | 0350e6fb27b98529222d1c5b501817349c163c42 /drivers/ide/pci/piix.c | |
| parent | a6fe837ed63aa812bea029a24b7aafc72ba8de88 (diff) | |
| download | blackbird-op-linux-90986028c98be10807bb6f48e883f33fa20e5499.tar.gz blackbird-op-linux-90986028c98be10807bb6f48e883f33fa20e5499.zip | |
it8213/piix/slc90e66: don't change DMA settings when programming PIO
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/piix.c')
| -rw-r--r-- | drivers/ide/pci/piix.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c index 07492d71c602..860b929f6e58 100644 --- a/drivers/ide/pci/piix.c +++ b/drivers/ide/pci/piix.c @@ -1,5 +1,5 @@ /* - * linux/drivers/ide/pci/piix.c Version 0.51 Jul 6, 2007 + * linux/drivers/ide/pci/piix.c Version 0.52 Jul 14, 2007 * * Copyright (C) 1998-1999 Andrzej Krzysztofowicz, Author and Maintainer * Copyright (C) 1998-2000 Andre Hedrick <andre@linux-ide.org> @@ -242,6 +242,11 @@ static int piix_tune_chipset(ide_drive_t *drive, const u8 speed) u16 reg4042, reg4a; u8 reg48, reg54, reg55; + if (speed >= XFER_PIO_0 && speed <= XFER_PIO_4) { + piix_tune_pio(drive, speed - XFER_PIO_0); + return ide_config_drive_speed(drive, speed); + } + pci_read_config_word(dev, maslave, ®4042); sitre = (reg4042 & 0x4000) ? 1 : 0; pci_read_config_byte(dev, 0x48, ®48); @@ -259,11 +264,6 @@ static int piix_tune_chipset(ide_drive_t *drive, const u8 speed) case XFER_MW_DMA_2: case XFER_MW_DMA_1: case XFER_SW_DMA_2: break; - case XFER_PIO_4: - case XFER_PIO_3: - case XFER_PIO_2: - case XFER_PIO_1: - case XFER_PIO_0: break; default: return -1; } @@ -293,10 +293,7 @@ static int piix_tune_chipset(ide_drive_t *drive, const u8 speed) pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag); } - if (speed > XFER_PIO_4) - piix_tune_pio(drive, piix_dma_2_pio(speed)); - else - piix_tune_pio(drive, speed - XFER_PIO_0); + piix_tune_pio(drive, piix_dma_2_pio(speed)); return ide_config_drive_speed(drive, speed); } |
