[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>
git-mirror · Feb 22, 2013 · 552f3f9 · 552f3f9
1 parent a865c50
commit 552f3f9
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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;