ide: move ide_rate_filter() calls to the upper layer (take 2)

* Move ide_rate_filter() calls from host drivers to IDE core.

* Make ide_rate_filter() static.

* Make 'speed' argument of ->speedproc const.

v2:
* Fix it8213_tune_chipset() comment.

There should be no functionality changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 3 insertions, 7 deletions

diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 9286c99e2ff0..a756e61bcb32 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -405,23 +405,19 @@ static int it821x_dma_end(ide_drive_t *drive)
         return ret;
 }
 
-
 /**
  *      it821x_tune_chipset     -       set controller timings
  *      @drive: Drive to set up
- *      @xferspeed: speed we want to achieve
+ *      @speed: speed we want to achieve
  *
- *      Tune the ITE chipset for the desired mode. If we can't achieve
- *      the desired mode then tune for a lower one, but ultimately
- *      make the thing work.
+ *      Tune the ITE chipset for the desired mode.
  */
 
-static int it821x_tune_chipset (ide_drive_t *drive, byte xferspeed)
+static int it821x_tune_chipset(ide_drive_t *drive, const u8 speed)
 {
 
         ide_hwif_t *hwif        = drive->hwif;
         struct it821x_dev *itdev = ide_get_hwifdata(hwif);
-        u8 speed                = ide_rate_filter(drive, xferspeed);
 
         switch (speed) {
         case XFER_PIO_4: