[media] media/radio/tef6862: fix checking return value of i2c_master_send

i2c_master_send returns negative errno, or else the number of bytes written.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/media/radio/tef6862.c b/drivers/media/radio/tef6862.c
index 0991e1973678..3408685b690c 100644
--- a/drivers/media/radio/tef6862.c
+++ b/drivers/media/radio/tef6862.c
@@ -118,9 +118,11 @@ static int tef6862_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)
         i2cmsg[2] = pll & 0xff;
 
         err = i2c_master_send(client, i2cmsg, sizeof(i2cmsg));
-        if (!err)
-                state->freq = f->frequency;
-        return err;
+        if (err != sizeof(i2cmsg))
+                return err < 0 ? err : -EIO;
+
+        state->freq = f->frequency;
+        return 0;
 }
 
 static int tef6862_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f)