From: Masanari Iida <standby24x7@gmail.com>
Date: Wed, 21 Nov 2012 03:45:03 +0000 (+0530)
Subject: qla2xxx: Avoid null pointer dereference in shutdown routine.
X-Git-Tag: v2.6.39-400.9.0~24^2~6
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=c4a84a6fc50be9d496a5fbf39c6cf509ce32d09f;p=users%2Fjedix%2Flinux-maple.git

qla2xxx: Avoid null pointer dereference in shutdown routine.

JIRA Key: V2632FC-307
ER: ER100463

Acked-by: Chad Dupuis <chad.dupuis@qlogic.com>
Acked-by: Armen Baloyan <armen.baloyan@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
---

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 591c5ae61183c..defd5dbec175d 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -2757,6 +2757,9 @@ qla2x00_shutdown(struct pci_dev *pdev)
 	scsi_qla_host_t *vha;
 	struct qla_hw_data  *ha;
 
+	if (!atomic_read(&pdev->enable_cnt))
+		return;
+
 	vha = pci_get_drvdata(pdev);
 	ha = vha->hw;