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| author | James Bottomley <James.Bottomley@steeleye.com> | 2005-09-14 12:57:42 -0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2005-09-14 16:59:03 -0400 |
| commit | 59897dad98d63ac15e1e36fcc3a107c892b1826c (patch) | |
| tree | 42e65c1e3e99ab12ab484b0311c4487ae7a76148 | |
| parent | d39a942c3f4061d2218dcadf79ce10010dbcdb3c (diff) | |
| download | linux-59897dad98d63ac15e1e36fcc3a107c892b1826c.tar.bz2 | |
[SCSI] fix sym scsi boot hang
On Wed, 2005-09-14 at 18:06 +1000, Anton Blanchard wrote:
> And in particular it looks like the scsi_unprep_request in
> scsi_queue_insert is causing it. The following patch fixes the boot
> problems on the vscsi machine:
OK, my fault. Your fix is almost correct .. I was going to do this
eventually, honest, because there's no need to unprep and reprep a
command that comes in through scsi_queue_insert().
However, I decided to leave it in to exercise the scsi_unprep_request()
path just to make sure it was working. What's happening, I think, is
that we also use this path for retries. Since we kill and reget the
command each time, the retries decrement is never seen, so we're
retrying forever.
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | drivers/scsi/scsi_lib.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index f9026d08532a..0c6924eecf59 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -140,14 +140,12 @@ static void scsi_unprep_request(struct request *req) * commands. * Notes: This could be called either from an interrupt context or a * normal process context. - * Notes: Upon return, cmd is a stale pointer. */ int scsi_queue_insert(struct scsi_cmnd *cmd, int reason) { struct Scsi_Host *host = cmd->device->host; struct scsi_device *device = cmd->device; struct request_queue *q = device->request_queue; - struct request *req = cmd->request; unsigned long flags; SCSI_LOG_MLQUEUE(1, @@ -188,9 +186,8 @@ int scsi_queue_insert(struct scsi_cmnd *cmd, int reason) * function. The SCSI request function detects the blocked condition * and plugs the queue appropriately. */ - scsi_unprep_request(req); spin_lock_irqsave(q->queue_lock, flags); - blk_requeue_request(q, req); + blk_requeue_request(q, cmd->request); spin_unlock_irqrestore(q->queue_lock, flags); scsi_run_queue(q); |