[media] radio: NUL terminate a user string

We pass this to fm_tx_set_radio_text() which expects a NUL terminated
string.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/media/radio/wl128x/fmdrv_v4l2.c b/drivers/media/radio/wl128x/fmdrv_v4l2.c
index 4f5c43d2566c..077d369a0173 100644
--- a/drivers/media/radio/wl128x/fmdrv_v4l2.c
+++ b/drivers/media/radio/wl128x/fmdrv_v4l2.c
@@ -84,6 +84,7 @@ static ssize_t fm_v4l2_fops_write(struct file *file, const char __user * buf,
         struct fmdev *fmdev;
 
         ret = copy_from_user(&rds, buf, sizeof(rds));
+        rds.text[sizeof(rds.text) - 1] = '\0';
         fmdbg("(%d)type: %d, text %s, af %d\n",
                    ret, rds.text_type, rds.text, rds.af_freq);
         if (ret)