ide: convert "empty" REQ_TYPE_ATA_CMD requests to use REQ_TYPE_ATA_TASKFILE

Based on the previous work by Tejun Heo.

There should be no functionality changes caused by this patch.

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

drivers/ide/ide-disk.c

@@ -620,8 +620,10 @@ static int set_multcount(ide_drive_t *drive, int arg)
 
 	if (drive->special.b.set_multmode)
 		return -EBUSY;
+
 	ide_init_drive_cmd (&rq);
-	rq.cmd_type = REQ_TYPE_ATA_CMD;
+	rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
+
 	drive->mult_req = arg;
 	drive->special.b.set_multmode = 1;
 	(void) ide_do_drive_cmd (drive, &rq, ide_wait);

drivers/ide/ide-taskfile.c

@@ -781,7 +781,7 @@ int ide_cmd_ioctl (ide_drive_t *drive, unsigned int cmd, unsigned long arg)
 		struct request rq;
 
 		ide_init_drive_cmd(&rq);
-		rq.cmd_type = REQ_TYPE_ATA_CMD;
+		rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
 
 		return ide_do_drive_cmd(drive, &rq, ide_wait);
 	}

drivers/ide/ide.c

@@ -880,7 +880,7 @@ int set_pio_mode(ide_drive_t *drive, int arg)
 		return -EBUSY;
 
 	ide_init_drive_cmd(&rq);
-	rq.cmd_type = REQ_TYPE_ATA_CMD;
+	rq.cmd_type = REQ_TYPE_ATA_TASKFILE;
 
 	drive->tune_req = (u8) arg;
 	drive->special.b.set_tune = 1;