ide-tape: remove idetape_remove_stage_head()

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

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 25ffcbf..cbba475 100644 (file)
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -691,41 +691,6 @@ static void idetape_kfree_stage(idetape_tape_t *tape, idetape_stage_t *stage)
        __idetape_kfree_stage(stage);
 }
 
-/*
- * Remove tape->first_stage from the pipeline. The caller should avoid race
- * conditions.
- */
-static void idetape_remove_stage_head(ide_drive_t *drive)
-{
-       idetape_tape_t *tape = drive->driver_data;
-       idetape_stage_t *stage;
-
-       debug_log(DBG_PROCS, "Enter %s\n", __func__);
-
-       if (tape->first_stage == NULL) {
-               printk(KERN_ERR "ide-tape: bug: tape->first_stage is NULL\n");
-               return;
-       }
-       if (tape->active_stage == tape->first_stage) {
-               printk(KERN_ERR "ide-tape: bug: Trying to free our active "
-                               "pipeline stage\n");
-               return;
-       }
-       stage = tape->first_stage;
-       tape->first_stage = stage->next;
-       idetape_kfree_stage(tape, stage);
-       tape->nr_stages--;
-       if (tape->first_stage == NULL) {
-               tape->last_stage = NULL;
-               if (tape->next_stage != NULL)
-                       printk(KERN_ERR "ide-tape: bug: tape->next_stage !="
-                                       " NULL\n");
-               if (tape->nr_stages)
-                       printk(KERN_ERR "ide-tape: bug: nr_stages should be 0 "
-                                       "now\n");
-       }
-}
-
 /*
  * This will free all the pipeline stages starting from new_last_stage->next
  * to the end of the list, and point tape->last_stage to new_last_stage.
@@ -762,7 +727,6 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
        idetape_tape_t *tape = drive->driver_data;
        unsigned long flags;
        int error;
-       int remove_stage = 0;
        idetape_stage_t *active_stage;
 
        debug_log(DBG_PROCS, "Enter %s\n", __func__);
@@ -790,7 +754,6 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
                tape->active_data_rq = NULL;
                tape->nr_pending_stages--;
                if (rq->cmd[0] & REQ_IDETAPE_WRITE) {
-                       remove_stage = 1;
                        if (error) {
                                set_bit(IDETAPE_FLAG_PIPELINE_ERR,
                                        &tape->flags);
@@ -831,8 +794,6 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
        }
        ide_end_drive_cmd(drive, 0, 0);
 
-       if (remove_stage)
-               idetape_remove_stage_head(drive);
        if (tape->active_data_rq == NULL)
                clear_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
        spin_unlock_irqrestore(&tape->lock, flags);
@@ -1914,7 +1875,6 @@ static int __idetape_discard_read_pipeline(ide_drive_t *drive)
                cnt += rq_ptr->nr_sectors - rq_ptr->current_nr_sectors;
                if (rq_ptr->errors == IDETAPE_ERROR_FILEMARK)
                        ++cnt;
-               idetape_remove_stage_head(drive);
        }
        tape->nr_pending_stages = 0;
        tape->max_stages = tape->min_pipeline;