xiaomi-sm8450/android_kernel_xiaomi_sm8450
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ide: add ide_set_dma() helper (v2)

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* 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>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2007-02-17 02:40:26 +01:00
parent 9ef5791e1b
commit 3608b5d71a
36 changed files with 120 additions and 139 deletions
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12
drivers/ide/pci/it821x.c
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@@ -520,14 +520,12 @@ static int config_chipset_for_dma (ide_drive_t *drive)
static int it821x_config_drive_for_dma (ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
if (ide_use_dma(drive) && config_chipset_for_dma(drive))
return 0;
if (ide_use_dma(drive)) {
if (config_chipset_for_dma(drive))
return hwif->ide_dma_on(drive);
}
config_it821x_chipset_for_pio(drive, 1);
return hwif->ide_dma_off_quietly(drive);
return -1;
}
/**
@@ -612,7 +610,7 @@ static void __devinit it821x_fixups(ide_hwif_t *hwif)
#ifdef CONFIG_IDEDMA_ONLYDISK
if (drive->media == ide_disk)
#endif
hwif->ide_dma_check(drive);
ide_set_dma(drive);
} else {
/* Non RAID volume. Fixups to stop the core code
doing unsupported things */