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| author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-02-17 02:40:26 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-02-17 02:40:26 +0100 |
| commit | 3608b5d71a52c053787dbad6af20c25f7e0b75a9 (patch) | |
| tree | 5bd6ac777d32d8426e65e3c31cc1587674771e8c /drivers/ide/pci/piix.c | |
| parent | 9ef5791e1be91007951477b8ed1530ac1166a8e7 (diff) | |
| download | lwn-3608b5d71a52c053787dbad6af20c25f7e0b75a9.tar.gz lwn-3608b5d71a52c053787dbad6af20c25f7e0b75a9.zip | |
ide: add ide_set_dma() helper (v2)
* add ide_set_dma() helper and make ide_hwif_t.ide_dma_check return
-1 when DMA needs to be disabled (== need to call ->ide_dma_off_quietly)
0 when DMA needs to be enabled (== need to call ->ide_dma_on)
1 when DMA setting shouldn't be changed
* fix IDE code to use ide_set_dma() instead if using ->ide_dma_check directly
v2:
* updated for scc_pata
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/pci/piix.c')
| -rw-r--r-- | drivers/ide/pci/piix.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c index caf606a1ee86..569822f4cf55 100644 --- a/drivers/ide/pci/piix.c +++ b/drivers/ide/pci/piix.c @@ -386,19 +386,17 @@ static int piix_config_drive_for_dma (ide_drive_t *drive) static int piix_config_drive_xfer_rate (ide_drive_t *drive) { - ide_hwif_t *hwif = HWIF(drive); - drive->init_speed = 0; if (ide_use_dma(drive) && piix_config_drive_for_dma(drive)) - return hwif->ide_dma_on(drive); + return 0; if (ide_use_fast_pio(drive)) /* Find best PIO mode. */ - (void) hwif->speedproc(drive, XFER_PIO_0 + - ide_get_best_pio_mode(drive, 255, 4, NULL)); + piix_tune_chipset(drive, XFER_PIO_0 + + ide_get_best_pio_mode(drive, 255, 4, NULL)); - return hwif->ide_dma_off_quietly(drive); + return -1; } /** |