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/atiixp.c b/drivers/ide/pci/atiixp.c
index 6d372c4..e7b4415 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -252,21 +252,20 @@
static int atiixp_dma_check(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
u8 tspeed, speed;
drive->init_speed = 0;
if (ide_use_dma(drive) && atiixp_config_drive_for_dma(drive))
- return hwif->ide_dma_on(drive);
+ return 0;
if (ide_use_fast_pio(drive)) {
tspeed = ide_get_best_pio_mode(drive, 255, 5, NULL);
speed = atiixp_dma_2_pio(XFER_PIO_0 + tspeed) + XFER_PIO_0;
- hwif->speedproc(drive, speed);
+ atiixp_speedproc(drive, speed);
}
- return hwif->ide_dma_off_quietly(drive);
+ return -1;
}
/**