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/cs5520.c b/drivers/ide/pci/cs5520.c
index ba6786a..400859a 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -132,12 +132,11 @@
static int cs5520_config_drive_xfer_rate(ide_drive_t *drive)
{
- ide_hwif_t *hwif = HWIF(drive);
-
/* Tune the drive for PIO modes up to PIO 4 */
cs5520_tune_drive(drive, 4);
+
/* Then tell the core to use DMA operations */
- return hwif->ide_dma_on(drive);
+ return 0;
}
/*