Hi, On 19-10-15 18:43, Insu Yun wrote:
create_singlethread_workqueue can be failed in memory pressue. So, check return value and return -ENOMEM Signed-off-by: Insu Yun <wuninsu@xxxxxxxxx> --- drivers/media/usb/gspca/sq905.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/usb/gspca/sq905.c b/drivers/media/usb/gspca/sq905.c index a7ae0ec..b1c25d9a 100644 --- a/drivers/media/usb/gspca/sq905.c +++ b/drivers/media/usb/gspca/sq905.c @@ -392,6 +392,8 @@ static int sd_start(struct gspca_dev *gspca_dev) } /* Start the workqueue function to do the streaming */ dev->work_thread = create_singlethread_workqueue(MODULE_NAME); + if (!dev->work_thread) + return -ENOMEM; queue_work(dev->work_thread, &dev->work_struct); return 0;
If the thread creation fails we should not send the start command, so the create_singlethread_workqueue call should be moved up in the function, while keeping the queue_work at the end. And if the sq905_command fails then the workqueue should be destroyed and dev->work_thread should be set to NULL before returning the sq905_command failure to the caller. Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
