V4L/DVB (7462): bttv: Fix some API non-compliances for some audio/input V4L2 calls

Thanks to Cyrill Gorcunov <gorcunov@gmail.com> for pointing this
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index af2c0c994186..79da9d01d715 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -3117,12 +3117,18 @@ static int bttv_s_crop(struct file *file, void *f, struct v4l2_crop *crop)
 
 static int bttv_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 {
+        if (unlikely(a->index))
+                return -EINVAL;
+
         strcpy(a->name, "audio");
         return 0;
 }
 
 static int bttv_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
 {
+        if (unlikely(a->index))
+                return -EINVAL;
+
         return 0;
 }
 
@@ -3510,7 +3516,7 @@ static int radio_enum_input(struct file *file, void *priv,
                 return -EINVAL;
 
         strcpy(i->name, "Radio");
-         i->type = V4L2_INPUT_TYPE_TUNER;
+        i->type = V4L2_INPUT_TYPE_TUNER;
 
         return 0;
 }
@@ -3518,10 +3524,9 @@ static int radio_enum_input(struct file *file, void *priv,
 static int radio_g_audio(struct file *file, void *priv,
                                         struct v4l2_audio *a)
 {
-        if (a->index != 0)
+        if (unlikely(a->index))
                 return -EINVAL;
 
-        memset(a, 0, sizeof(*a));
         strcpy(a->name, "Radio");
 
         return 0;
@@ -3543,11 +3548,17 @@ static int radio_s_tuner(struct file *file, void *priv,
 static int radio_s_audio(struct file *file, void *priv,
                                         struct v4l2_audio *a)
 {
+        if (unlikely(a->index))
+                return -EINVAL;
+
         return 0;
 }
 
 static int radio_s_input(struct file *filp, void *priv, unsigned int i)
 {
+        if (unlikely(i))
+                return -EINVAL;
+
         return 0;
 }