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, 8 insertions, 9 deletions

diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 41a128f52112..957618849540 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -79,7 +79,7 @@ EXPORT_SYMBOL(ide_xfer_verbose);
  *      TODO: check device PIO capabilities
  */
 
-u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
+static u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
 {
         ide_hwif_t *hwif = drive->hwif;
         u8 mode = ide_find_dma_mode(drive, speed);
@@ -96,8 +96,6 @@ u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
         return min(speed, mode);
 }
 
-EXPORT_SYMBOL(ide_rate_filter);
-
 int ide_use_fast_pio(ide_drive_t *drive)
 {
         struct hd_driveid *id = drive->id;
@@ -364,13 +362,14 @@ void ide_toggle_bounce(ide_drive_t *drive, int on)
  
 int ide_set_xfer_rate(ide_drive_t *drive, u8 rate)
 {
-#ifndef CONFIG_BLK_DEV_IDEDMA
-        rate = min(rate, (u8) XFER_PIO_4);
-#endif
-        if(HWIF(drive)->speedproc)
-                return HWIF(drive)->speedproc(drive, rate);
-        else
+        ide_hwif_t *hwif = drive->hwif;
+
+        if (hwif->speedproc == NULL)
                 return -1;
+
+        rate = ide_rate_filter(drive, rate);
+
+        return hwif->speedproc(drive, rate);
 }
 
 static void ide_dump_opcode(ide_drive_t *drive)