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authorJens Axboe <jaxboe@fusionio.com>2011-04-05 03:29:57 +0200
committerJens Axboe <jaxboe@fusionio.com>2011-04-05 23:52:49 +0200
commit782b86e2656762382ae1c2686d8d5c91f7d5eacf (patch)
treea2d47765c87d1407e67ac55634c2bcbfa6cddb59
parentf83e826181f7f8fb152e4190d03854fc3a5dd040 (diff)
downloadconfigs-782b86e2656762382ae1c2686d8d5c91f7d5eacf.tar.gz
ide: always ensure that blk_delay_queue() is called if we have pending IO
Just because we are not requeuing a request does not mean that some aren't pending. So always issue a blk_delay_queue() if either we are requeueing OR there's pending IO. This fixes a boot problem for some IDE boxes. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
-rw-r--r--drivers/ide/ide-io.c42
1 files changed, 21 insertions, 21 deletions
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index ca27d3090ae..177db6d5b2f 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -430,6 +430,26 @@ static inline void ide_unlock_host(struct ide_host *host)
}
}
+static void __ide_requeue_and_plug(struct request_queue *q, struct request *rq)
+{
+ if (rq)
+ blk_requeue_request(q, rq);
+ if (rq || blk_peek_request(q)) {
+ /* Use 3ms as that was the old plug delay */
+ blk_delay_queue(q, 3);
+ }
+}
+
+void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq)
+{
+ struct request_queue *q = drive->queue;
+ unsigned long flags;
+
+ spin_lock_irqsave(q->queue_lock, flags);
+ __ide_requeue_and_plug(q, rq);
+ spin_unlock_irqrestore(q->queue_lock, flags);
+}
+
/*
* Issue a new request to a device.
*/
@@ -550,27 +570,7 @@ plug_device:
ide_unlock_host(host);
plug_device_2:
spin_lock_irq(q->queue_lock);
-
- if (rq) {
- blk_requeue_request(q, rq);
- blk_delay_queue(q, queue_run_ms);
- }
-}
-
-void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq)
-{
- struct request_queue *q = drive->queue;
- unsigned long flags;
-
- spin_lock_irqsave(q->queue_lock, flags);
-
- if (rq)
- blk_requeue_request(q, rq);
-
- spin_unlock_irqrestore(q->queue_lock, flags);
-
- /* Use 3ms as that was the old plug delay */
- blk_delay_queue(q, 3);
+ __ide_requeue_and_plug(q, rq);
}
static int drive_is_ready(ide_drive_t *drive)