ide: add ide_tune_dma() helper
After reworking the code responsible for selecting the best DMA
transfer mode it is now possible to add generic ide_tune_dma() helper.
Convert some IDE PCI host drivers to use it (the ones left need more work).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c
index 8a87723..35e8c61 100644
--- a/drivers/ide/pci/triflex.c
+++ b/drivers/ide/pci/triflex.c
@@ -100,20 +100,9 @@
(void) triflex_tune_chipset(drive, (XFER_PIO_0 + use_pio));
}
-static int triflex_config_drive_for_dma(ide_drive_t *drive)
-{
- u8 speed = ide_max_dma_mode(drive);
-
- if (!speed)
- return 0;
-
- (void) triflex_tune_chipset(drive, speed);
- return ide_dma_enable(drive);
-}
-
static int triflex_config_drive_xfer_rate(ide_drive_t *drive)
{
- if (ide_use_dma(drive) && triflex_config_drive_for_dma(drive))
+ if (ide_tune_dma(drive))
return 0;
triflex_tune_drive(drive, 255);