[media] nova-t-usb2: 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/nova-t-usb2.c b/drivers/media/usb/dvb-usb/nova-t-usb2.c
index 26d7188a116313b4383db60726fec93f36eb4acd..1babd334191069d30419e2c07fc25fd04e0931d4 100644 (file)
--- a/drivers/media/usb/dvb-usb/nova-t-usb2.c
+++ b/drivers/media/usb/dvb-usb/nova-t-usb2.c
@@ -76,7 +76,7 @@ static int nova_t_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 {
        u8 *buf, data, toggle, custom;
        u16 raw;
-       int i;
+       int i, ret;
        struct dibusb_device_state *st = d->priv;
 
        buf = kmalloc(5, GFP_KERNEL);
@@ -85,7 +85,9 @@ static int nova_t_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 
        buf[0] = DIBUSB_REQ_POLL_REMOTE;
        buf[1] = 0x35;
-       dvb_usb_generic_rw(d, buf, 2, buf, 5, 0);
+       ret = dvb_usb_generic_rw(d, buf, 2, buf, 5, 0);
+       if (ret < 0)
+               goto ret;
 
        *state = REMOTE_NO_KEY_PRESSED;
        switch (buf[0]) {
@@ -124,8 +126,9 @@ static int nova_t_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
                        break;
        }
 
+ret:
        kfree(buf);
-       return 0;
+       return ret;
 }
 
 static int nova_t_read_mac_address (struct dvb_usb_device *d, u8 mac[6])