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[media] dibusb: handle error code on RC query

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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>
This commit is contained in:
Mauro Carvalho Chehab 2016-10-07 13:40:48 -03:00
parent 426398b15d
commit ff1c123545
1 changed files with 6 additions and 2 deletions
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8
drivers/media/usb/dvb-usb/dibusb-common.c
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@ -366,6 +366,7 @@ EXPORT_SYMBOL(rc_map_dibusb_table);
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 @@ int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
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 @@ int dibusb_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
kfree(buf);
return 0;
ret:
return ret;
}
EXPORT_SYMBOL(dibusb_rc_query);