diff options
| -rw-r--r-- | drivers/ide/ide-tape.c | 29 |
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; |