diff options
| author | Daniil Dulov <d.dulov@aladdin.ru> | 2023-03-14 18:04:49 +0100 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-05-25 16:21:19 +0200 |
| commit | fdaca63186f59fc664b346c45b76576624b48e57 (patch) | |
| tree | dc703306504c92d1cdebcb220c76447d3de88cca | |
| parent | media: platform: mtk-mdp3: release node reference before returning (diff) | |
| download | linux-fdaca63186f59fc664b346c45b76576624b48e57.tar.xz linux-fdaca63186f59fc664b346c45b76576624b48e57.zip | |
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: 3af2f4f15a61 ("[media] az6007: Change the az6007 read/write routine parameter")
Signed-off-by: Daniil Dulov <d.dulov@aladdin.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/az6007.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/az6007.c b/drivers/media/usb/dvb-usb-v2/az6007.c index 62ee09f28a0b..7524c90f5da6 100644 --- a/drivers/media/usb/dvb-usb-v2/az6007.c +++ b/drivers/media/usb/dvb-usb-v2/az6007.c @@ -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; |