UPSTREAM: [media] lirc: fix null dereference for tx-only devices

tx-only RC devices do not have a receive buffer.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit 7cebf2ee8b)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
This commit is contained in:
Sean Young
2017-01-20 10:10:11 -02:00
committed by Tao Huang
parent 06dee2fee2
commit 6571b54924

View File

@@ -472,7 +472,7 @@ int lirc_dev_fop_open(struct inode *inode, struct file *file)
if (retval) {
module_put(cdev->owner);
ir->open--;
} else {
} else if (ir->buf) {
lirc_buffer_clear(ir->buf);
}
if (ir->task)