i2c/ds1374: Check workqueue creation status

Check if workqueue creation failed.  Further usage of NULL pointed
workqueue is not good I guess ;)

Signed-off-by: Cyrill V. Gorcunov <gorcunov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/i2c/chips/ds1374.c b/drivers/i2c/chips/ds1374.c
index 15edf40828b4..8a2ff0c114d9 100644
--- a/drivers/i2c/chips/ds1374.c
+++ b/drivers/i2c/chips/ds1374.c
@@ -207,6 +207,10 @@ static int ds1374_probe(struct i2c_adapter *adap, int addr, int kind)
         client->driver = &ds1374_driver;
 
         ds1374_workqueue = create_singlethread_workqueue("ds1374");
+        if (!ds1374_workqueue) {
+                kfree(client);
+                return -ENOMEM; /* most expected reason */
+        }
 
         if ((rc = i2c_attach_client(client)) != 0) {
                 kfree(client);