[PATCH] qla2xxx: fix a potential NULL pointer dereference

[Allen Pais]

alloc_workqueue is not checked for errors and as a result,
a potential NULL dereference could occur.

Signed-off-by: Allen Pais <allen.p...@oracle.com>
---
 drivers/scsi/qla2xxx/qla_os.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 98e60a3..31714c9 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -3232,6 +3232,10 @@ static void qla2x00_iocb_work_fn(struct work_struct 
*work)
            req->req_q_in, req->req_q_out, rsp->rsp_q_in, rsp->rsp_q_out);
 
        ha->wq = alloc_workqueue("qla2xxx_wq", 0, 0);
+       if (unlikely(!ha->wq)) {
+               ret = -ENOMEM;
+               goto probe_failed;
+       }
 
        if (ha->isp_ops->initialize_adapter(base_vha)) {
                ql_log(ql_log_fatal, base_vha, 0x00d6,
-- 
1.9.1