[media] dibusb: handle error code on RC query
There's no sense on decoding and generating a RC key code if
there was an error on the URB control message.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/drivers/media/usb/dvb-usb/dibusb-common.c b/drivers/media/usb/dvb-usb/dibusb-common.c
index 951f3da..b0fd9a6 100644
--- a/drivers/media/usb/dvb-usb/dibusb-common.c
+++ b/drivers/media/usb/dvb-usb/dibusb-common.c
@@ -366,6 +366,7 @@
int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
{
u8 *buf;
+ int ret;
buf = kmalloc(5, GFP_KERNEL);
if (!buf)
@@ -373,7 +374,9 @@
buf[0] = DIBUSB_REQ_POLL_REMOTE;
- dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);
+ ret = dvb_usb_generic_rw(d, buf, 1, buf, 5, 0);
+ if (ret < 0)
+ goto ret;
dvb_usb_nec_rc_key_to_event(d, buf, event, state);
@@ -382,6 +385,7 @@
kfree(buf);
- return 0;
+ret:
+ return ret;
}
EXPORT_SYMBOL(dibusb_rc_query);