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>
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index 917cc8e..ae7eb58 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -179,18 +179,16 @@
static int slc90e66_config_drive_xfer_rate (ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
-
drive->init_speed = 0;
if (ide_use_dma(drive) && slc90e66_config_drive_for_dma(drive))
- return hwif->ide_dma_on(drive);
+ return 0;
if (ide_use_fast_pio(drive))
- (void) hwif->speedproc(drive, XFER_PIO_0 +
- ide_get_best_pio_mode(drive, 255, 4, NULL));
+ (void)slc90e66_tune_chipset(drive, XFER_PIO_0 +
+ ide_get_best_pio_mode(drive, 255, 4, NULL));
- return hwif->ide_dma_off_quietly(drive);
+ return -1;
}
static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif)