[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>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/media/usb/dvb-usb/nova-t-usb2.c b/drivers/media/usb/dvb-usb/nova-t-usb2.c
index 26d7188a1163..1babd3341910 100644
--- 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])