renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-11-17 15:14:35 +08:00
Code

ide: always ensure that blk_delay_queue() is called if we have pending IO

Browse Source 
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>
This commit is contained in:
Jens Axboe 2011-04-05 03:29:57 +02:00
parent f83e826181
commit 782b86e265
1 changed files with 21 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
drivers/ide/ide-io.c
View File

@ -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)