ide: switch set_xfer_rate() to use REQ_TYPE_ATA_TASKFILE requests

Based on the earlier work by Tejun Heo.

Switch set_xfer_rate() to use REQ_TYPE_ATA_TASKFILE requests
and make ide_wait_cmd() static.

There should be no functionality changes caused by this patch.

Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index a4007d30da52..aa663e7f46f2 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -346,14 +346,20 @@ static int ide_write_setting(ide_drive_t *drive, ide_settings_t *setting, int va
 
 static int set_xfer_rate (ide_drive_t *drive, int arg)
 {
+        ide_task_t task;
         int err;
 
         if (arg < 0 || arg > 70)
                 return -EINVAL;
 
-        err = ide_wait_cmd(drive,
-                        WIN_SETFEATURES, (u8) arg,
-                        SETFEATURES_XFER, 0, NULL);
+        memset(&task, 0, sizeof(task));
+        task.tf.command = WIN_SETFEATURES;
+        task.tf.feature = SETFEATURES_XFER;
+        task.tf.nsect   = (u8)arg;
+        task.tf_flags = IDE_TFLAG_OUT_FEATURE | IDE_TFLAG_OUT_NSECT |
+                        IDE_TFLAG_IN_NSECT;
+
+        err = ide_no_data_taskfile(drive, &task);
 
         if (!err && arg) {
                 ide_set_xfer_rate(drive, (u8) arg);