Commit 32002f72 authored Feb 01, 2017 by Sean Young Committed by Mauro Carvalho Chehab Feb 03, 2017

[media] lirc: cannot read from tx-only device



Bail out early, otherwise we follow a null pointer.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

parent 7a6628b5

drivers/media/rc/lirc_dev.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -647,6 +647,9 @@ ssize_t lirc_dev_fop_read(struct file *file,
		return -ENODEV;
		}

		if (!LIRC_CAN_REC(ir->d.features))
		return -EINVAL;

		dev_dbg(ir->d.dev, LOGHEAD "read called\n", ir->d.name, ir->d.minor);

		buf = kzalloc(ir->chunk_size, GFP_KERNEL);