media: radio: wl1273: add check on core->write() return value

Check return value from call to core->write(), so in case of
error print error message, jump to goto label fail and eventually
return.

Addresses-Coverity-ID: 1226943

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/drivers/media/radio/radio-wl1273.c b/drivers/media/radio/radio-wl1273.c
index 7240223..17e82a9 100644 (file)
--- a/drivers/media/radio/radio-wl1273.c
+++ b/drivers/media/radio/radio-wl1273.c
@@ -610,10 +610,21 @@ static int wl1273_fm_start(struct wl1273_device *radio, int new_mode)
                        }
                }
 
-               if (radio->rds_on)
+               if (radio->rds_on) {
                        r = core->write(core, WL1273_RDS_DATA_ENB, 1);
-               else
+                       if (r) {
+                               dev_err(dev, "%s: RDS_DATA_ENB ON fails\n",
+                                       __func__);
+                               goto fail;
+                       }
+               } else {
                        r = core->write(core, WL1273_RDS_DATA_ENB, 0);
+                       if (r) {
+                               dev_err(dev, "%s: RDS_DATA_ENB OFF fails\n",
+                                       __func__);
+                               goto fail;
+                       }
+               }
        } else {
                dev_warn(dev, "%s: Illegal mode.\n", __func__);
        }