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 591c5ae61183c58fa095f136fb2c628a0b8c3ed7..defd5dbec175d6ac28bbc72d4f8416f0ae8f2c10 100644 (file)
--- 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;