Fix panic caused by HBA resets and target side cable pulls
Signed-off-by: Jamie Wellnitz <Jamie.Wellnitz@xxxxxxxxxx>
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -1,7 +1,7 @@
/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
- * Copyright (C) 2004-2005 Emulex. All rights reserved. *
+ * Copyright (C) 2004-2006 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.emulex.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
@@ -467,7 +467,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba
sdev = cmd->device;
cmd->scsi_done(cmd);
- if (!result &&
+ if (!result && pnode != NULL &&
((jiffies - pnode->last_ramp_up_time) >
LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
((jiffies - pnode->last_q_full_time) >
@@ -495,7 +495,7 @@ lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba
* Check for queue full. If the lun is reporting queue full, then
* back off the lun queue depth to prevent target overloads.
*/
- if (result == SAM_STAT_TASK_SET_FULL) {
+ if (result == SAM_STAT_TASK_SET_FULL && pnode != NULL) {
pnode->last_q_full_time = jiffies;
shost_for_each_device(tmp_sdev, sdev->host) {
-
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