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| author | James Smart <James.Smart@Emulex.Com> | 2006-03-08 14:50:12 -0500 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-06-27 10:48:11 -0500 |
| commit | d7a1bb0a04ca835bffc0a91e64ab827dfba7d8f5 (patch) | |
| tree | f944d6ed6ecf23c59054b7f459e88f31f8da4235 /drivers/scsi/scsi_error.c | |
| parent | 12e9b5fb96028aab26af65bb06d2dee56c428a6e (diff) | |
| download | linux-d7a1bb0a04ca835bffc0a91e64ab827dfba7d8f5.tar.gz linux-d7a1bb0a04ca835bffc0a91e64ab827dfba7d8f5.tar.bz2 linux-d7a1bb0a04ca835bffc0a91e64ab827dfba7d8f5.zip | |
[SCSI] Block I/O while SG reset operation in progress - the midlayer patch
The scsi midlayer portion of the patch
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/scsi_error.c')
| -rw-r--r-- | drivers/scsi/scsi_error.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index 6a7a60fc0a4e..6683d596234a 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -1672,7 +1672,9 @@ int scsi_reset_provider(struct scsi_device *dev, int flag) { struct scsi_cmnd *scmd = scsi_get_command(dev, GFP_KERNEL); + struct Scsi_Host *shost = dev->host; struct request req; + unsigned long flags; int rtn; scmd->request = &req; @@ -1699,6 +1701,10 @@ scsi_reset_provider(struct scsi_device *dev, int flag) */ scmd->pid = 0; + spin_lock_irqsave(shost->host_lock, flags); + shost->tmf_in_progress = 1; + spin_unlock_irqrestore(shost->host_lock, flags); + switch (flag) { case SCSI_TRY_RESET_DEVICE: rtn = scsi_try_bus_device_reset(scmd); @@ -1717,6 +1723,22 @@ scsi_reset_provider(struct scsi_device *dev, int flag) rtn = FAILED; } + spin_lock_irqsave(shost->host_lock, flags); + shost->tmf_in_progress = 0; + spin_unlock_irqrestore(shost->host_lock, flags); + + /* + * be sure to wake up anyone who was sleeping or had their queue + * suspended while we performed the TMF. + */ + SCSI_LOG_ERROR_RECOVERY(3, + printk("%s: waking up host to restart after TMF\n", + __FUNCTION__)); + + wake_up(&shost->host_wait); + + scsi_run_host_queues(shost); + scsi_next_command(scmd); return rtn; } |