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>

1 files changed, 1 insertions, 14 deletions

diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index 66a101e470d0..41925c47ef05 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -164,26 +164,13 @@ static void cs5535_tuneproc(ide_drive_t *drive, u8 xferspeed)
         cs5535_set_speed(drive, xferspeed);
 }
 
-static int cs5535_config_drive_for_dma(ide_drive_t *drive)
-{
-        u8 speed = ide_max_dma_mode(drive);
-
-        /* If no DMA speed was available then let dma_check hit pio */
-        if (!speed) {
-                return 0;
-        }
-
-        cs5535_set_drive(drive, speed);
-        return ide_dma_enable(drive);
-}
-
 static int cs5535_dma_check(ide_drive_t *drive)
 {
         u8 speed;
 
         drive->init_speed = 0;
 
-        if (ide_use_dma(drive) && cs5535_config_drive_for_dma(drive))
+        if (ide_tune_dma(drive))
                 return 0;
 
         if (ide_use_fast_pio(drive)) {