ide: factor out processing of special commands from ide_special_rq()

Factor out processing of special commands from ide_special_rq()
to ide_do_devset() and ide_do_park_unpark().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 41 insertions, 34 deletions

diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 56be3375bee4..c37883ae2662 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -514,46 +514,53 @@ int ide_devset_execute(ide_drive_t *drive, const struct ide_devset *setting,
         return ret;
 }
 
+static ide_startstop_t ide_do_devset(ide_drive_t *drive, struct request *rq)
+{
+        int err, (*setfunc)(ide_drive_t *, int) = rq->special;
+
+        err = setfunc(drive, *(int *)&rq->cmd[1]);
+        if (err)
+                rq->errors = err;
+        else
+                err = 1;
+        ide_end_request(drive, err, 0);
+        return ide_stopped;
+}
+
+static ide_startstop_t ide_do_park_unpark(ide_drive_t *drive, struct request *rq)
+{
+        ide_task_t task;
+        struct ide_taskfile *tf = &task.tf;
+
+        memset(&task, 0, sizeof(task));
+        if (rq->cmd[0] == REQ_PARK_HEADS) {
+                drive->sleep = *(unsigned long *)rq->special;
+                drive->dev_flags |= IDE_DFLAG_SLEEPING;
+                tf->command = ATA_CMD_IDLEIMMEDIATE;
+                tf->feature = 0x44;
+                tf->lbal = 0x4c;
+                tf->lbam = 0x4e;
+                tf->lbah = 0x55;
+                task.tf_flags |= IDE_TFLAG_CUSTOM_HANDLER;
+        } else          /* cmd == REQ_UNPARK_HEADS */
+                tf->command = ATA_CMD_CHK_POWER;
+
+        task.tf_flags |= IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
+        task.rq = rq;
+        drive->hwif->data_phase = task.data_phase = TASKFILE_NO_DATA;
+        return do_rw_taskfile(drive, &task);
+}
+
 static ide_startstop_t ide_special_rq(ide_drive_t *drive, struct request *rq)
 {
         u8 cmd = rq->cmd[0];
 
-        if (cmd == REQ_PARK_HEADS || cmd == REQ_UNPARK_HEADS) {
-                ide_task_t task;
-                struct ide_taskfile *tf = &task.tf;
-
-                memset(&task, 0, sizeof(task));
-                if (cmd == REQ_PARK_HEADS) {
-                        drive->sleep = *(unsigned long *)rq->special;
-                        drive->dev_flags |= IDE_DFLAG_SLEEPING;
-                        tf->command = ATA_CMD_IDLEIMMEDIATE;
-                        tf->feature = 0x44;
-                        tf->lbal = 0x4c;
-                        tf->lbam = 0x4e;
-                        tf->lbah = 0x55;
-                        task.tf_flags |= IDE_TFLAG_CUSTOM_HANDLER;
-                } else          /* cmd == REQ_UNPARK_HEADS */
-                        tf->command = ATA_CMD_CHK_POWER;
-
-                task.tf_flags |= IDE_TFLAG_TF | IDE_TFLAG_DEVICE;
-                task.rq = rq;
-                drive->hwif->data_phase = task.data_phase = TASKFILE_NO_DATA;
-                return do_rw_taskfile(drive, &task);
-        }
-
         switch (cmd) {
+        case REQ_PARK_HEADS:
+        case REQ_UNPARK_HEADS:
+                return ide_do_park_unpark(drive, rq);
         case REQ_DEVSET_EXEC:
-        {
-                int err, (*setfunc)(ide_drive_t *, int) = rq->special;
-
-                err = setfunc(drive, *(int *)&rq->cmd[1]);
-                if (err)
-                        rq->errors = err;
-                else
-                        err = 1;
-                ide_end_request(drive, err, 0);
-                return ide_stopped;
-        }
+                return ide_do_devset(drive, rq);
         case REQ_DRIVE_RESET:
                 return ide_do_reset(drive);
         default: