From: Masanari Iida <standby24x7@gmail.com>
Date: Fri, 8 Feb 2013 06:57:44 +0000 (-0500)
Subject: [SCSI] qla2xxx: Avoid null pointer dereference in shutdown routine.
X-Git-Tag: firefly_0821_release~3680^2~974^2~48
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;ds=sidebyside;h=552f3f9aca3b8aee5b1b52bece6771d3275ca744;p=firefly-linux-kernel-4.4.55.git

[SCSI] qla2xxx: Avoid null pointer dereference in shutdown routine.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 0612d2557e62..9e3ae1d8de51 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -2808,6 +2808,9 @@ 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;