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, 20 deletions

diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c
index dbb3c199cba9..76ed25147229 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -119,25 +119,6 @@ static int jmicron_tune_chipset (ide_drive_t *drive, byte xferspeed)
 }
 
 /**
- *      config_chipset_for_dma  -       configure for DMA
- *      @drive: drive to configure
- *
- *      As the JMicron snoops for timings all we actually need to do is
- *      make sure we don't set an invalid mode.
- */
-
-static int config_chipset_for_dma (ide_drive_t *drive)
-{
-        u8 speed = ide_max_dma_mode(drive);
-
-        if (!speed)
-                return 0;
-
-        jmicron_tune_chipset(drive, speed);
-        return ide_dma_enable(drive);
-}
-
-/**
  *      jmicron_configure_drive_for_dma -       set up for DMA transfers
  *      @drive: drive we are going to set up
  *
@@ -147,7 +128,7 @@ static int config_chipset_for_dma (ide_drive_t *drive)
 
 static int jmicron_config_drive_for_dma (ide_drive_t *drive)
 {
-        if (ide_use_dma(drive) && config_chipset_for_dma(drive))
+        if (ide_tune_dma(drive))
                 return 0;
 
         config_jmicron_chipset_for_pio(drive, 1);