diff options
| author | Matthew Wilcox <matthew@wil.cx> | 2007-09-09 08:56:35 -0600 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.localdomain> | 2007-10-12 14:47:59 -0400 |
| commit | b2a7a4ba0497f73295e3f4d20a8cedb1e3d2b1a7 (patch) | |
| tree | 933be186e56c83dced0c04e6f30eb2ad0e3999fb | |
| parent | 349d2c44291d922614a273e9a4e6b43ee17c103d (diff) | |
[SCSI] advansys: Enable interrupts earlier in queuecommand
Move as much as possible outside the critical section in queuecommand, eg:
- Set the scsi_done field before acquiring the lock
- Call asc_scsi_done after dropping the lock
Also remove a comment suggesting we should enable interrupts (now we do)
and do some minor reformatting for readability.
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
| -rw-r--r-- | drivers/scsi/advansys.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/scsi/advansys.c b/drivers/scsi/advansys.c index 67cdfe6201c..d7bc0cf7213 100644 --- a/drivers/scsi/advansys.c +++ b/drivers/scsi/advansys.c @@ -3176,23 +3176,24 @@ static void asc_scsi_done(struct scsi_cmnd *scp) * in the 'scp' result field. */ static int -advansys_queuecommand(struct scsi_cmnd *scp, void (*done) (struct scsi_cmnd *)) +advansys_queuecommand(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) { - struct Scsi_Host *shost; - asc_board_t *boardp; - ulong flags; + struct Scsi_Host *shost = scp->device->host; + asc_board_t *boardp = ASC_BOARDP(shost); + unsigned long flags; int asc_res, result = 0; - shost = scp->device->host; - boardp = ASC_BOARDP(shost); ASC_STATS(shost, queuecommand); + scp->scsi_done = done; - /* host_lock taken by mid-level prior to call but need to protect */ - /* against own ISR */ + /* + * host_lock taken by mid-level prior to call, but need + * to protect against own ISR + */ spin_lock_irqsave(&boardp->lock, flags); - - scp->scsi_done = done; asc_res = asc_execute_scsi_cmnd(scp); + spin_unlock_irqrestore(&boardp->lock, flags); + switch (asc_res) { case ASC_NOERROR: break; @@ -3201,11 +3202,9 @@ advansys_queuecommand(struct scsi_cmnd *scp, void (*done) (struct scsi_cmnd *)) break; case ASC_ERROR: default: - /* Interrupts could be enabled here. */ asc_scsi_done(scp); break; } - spin_unlock_irqrestore(&boardp->lock, flags); return result; } |