1 files changed, 11 insertions, 18 deletions

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index f43fd070f1b6..cac14b22506f 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1605,14 +1605,6 @@ out:
 }
 
 /* Pipeline related functions */
-static inline int idetape_pipeline_active(idetape_tape_t *tape)
-{
-        int rc1, rc2;
-
-        rc1 = test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
-        rc2 = (tape->active_data_rq != NULL);
-        return rc1;
-}
 
 /*
  * The function below uses __get_free_page to allocate a pipeline stage, along
@@ -2058,7 +2050,7 @@ static int __idetape_discard_read_pipeline(ide_drive_t *drive)
 
         spin_lock_irqsave(&tape->lock, flags);
         tape->next_stage = NULL;
-        if (idetape_pipeline_active(tape))
+        if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags))
                 idetape_wait_for_request(drive, tape->active_data_rq);
         spin_unlock_irqrestore(&tape->lock, flags);
 
@@ -2131,7 +2123,7 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks,
 
         debug_log(DBG_SENSE, "%s: cmd=%d\n", __func__, cmd);
 
-        if (idetape_pipeline_active(tape)) {
+        if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
                 printk(KERN_ERR "ide-tape: bug: the pipeline is active in %s\n",
                                 __func__);
                 return (0);
@@ -2162,8 +2154,7 @@ static void idetape_plug_pipeline(ide_drive_t *drive)
 
         if (tape->next_stage == NULL)
                 return;
-        if (!idetape_pipeline_active(tape)) {
-                set_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
+        if (!test_and_set_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
                 idetape_activate_next_stage(drive);
                 (void) ide_do_drive_cmd(drive, tape->active_data_rq, ide_end);
         }
@@ -2242,13 +2233,14 @@ static int idetape_add_chrdev_write_request(ide_drive_t *drive, int blocks)
         /* Attempt to allocate a new stage. Beware possible race conditions. */
         while ((new_stage = idetape_kmalloc_stage(tape)) == NULL) {
                 spin_lock_irqsave(&tape->lock, flags);
-                if (idetape_pipeline_active(tape)) {
+                if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
                         idetape_wait_for_request(drive, tape->active_data_rq);
                         spin_unlock_irqrestore(&tape->lock, flags);
                 } else {
                         spin_unlock_irqrestore(&tape->lock, flags);
                         idetape_plug_pipeline(drive);
-                        if (idetape_pipeline_active(tape))
+                        if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE,
+                                        &tape->flags))
                                 continue;
                         /*
                          * The machine is short on memory. Fallback to non-
@@ -2277,7 +2269,7 @@ static int idetape_add_chrdev_write_request(ide_drive_t *drive, int blocks)
          * starting to service requests, so that we will be able to keep up with
          * the higher speeds of the tape.
          */
-        if (!idetape_pipeline_active(tape)) {
+        if (!test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
                 if (tape->nr_stages >= tape->max_stages * 9 / 10 ||
                         tape->nr_stages >= tape->max_stages -
                         tape->uncontrolled_pipeline_head_speed * 3 * 1024 /
@@ -2304,10 +2296,11 @@ static void idetape_wait_for_pipeline(ide_drive_t *drive)
         idetape_tape_t *tape = drive->driver_data;
         unsigned long flags;
 
-        while (tape->next_stage || idetape_pipeline_active(tape)) {
+        while (tape->next_stage || test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE,
+                                                &tape->flags)) {
                 idetape_plug_pipeline(drive);
                 spin_lock_irqsave(&tape->lock, flags);
-                if (idetape_pipeline_active(tape))
+                if (test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags))
                         idetape_wait_for_request(drive, tape->active_data_rq);
                 spin_unlock_irqrestore(&tape->lock, flags);
         }
@@ -2464,7 +2457,7 @@ static int idetape_init_read(ide_drive_t *drive, int max_stages)
                         new_stage = idetape_kmalloc_stage(tape);
                 }
         }
-        if (!idetape_pipeline_active(tape)) {
+        if (!test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags)) {
                 if (tape->nr_pending_stages >= 3 * max_stages / 4) {
                         tape->measure_insert_time = 1;
                         tape->insert_time = jiffies;