Commit fdaca631 authored by Daniil Dulov's avatar Daniil Dulov Committed by Hans Verkuil
Browse files

media: usb: Check az6007_read() return value 



If az6007_read() returns error, there is no sence to continue.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 3af2f4f1 ("[media] az6007: Change the az6007 read/write routine parameter")
Signed-off-by: default avatarDaniil Dulov <d.dulov@aladdin.ru>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
parent b8ed1ceb

drivers/media/usb/dvb-usb-v2/az6007.c

+2 −1
Original line number Diff line number Diff line
@@ -202,7 +202,8 @@ static int az6007_rc_query(struct dvb_usb_device *d) 
	unsigned code;

	enum rc_proto proto;



	az6007_read(d, AZ6007_READ_IR, 0, 0, st->data, 10);

	if (az6007_read(d, AZ6007_READ_IR, 0, 0, st->data, 10) < 0)

		return -EIO;



	if (st->data[1] == 0x44)

		return 0;