V4L/DVB (12747): em28xx: only advertise VBI capability if supported

Change the code so we only claim to support VBI if the underlying chipset
actually has the support.

This work was sponsored by EyeMagnet Limited.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index a5632c7e6438..8955b7b5365f 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -1758,11 +1758,13 @@ static int vidioc_querycap(struct file *file, void  *priv,
         cap->version = EM28XX_VERSION_CODE;
 
         cap->capabilities =
-                        V4L2_CAP_VBI_CAPTURE |
                         V4L2_CAP_SLICED_VBI_CAPTURE |
                         V4L2_CAP_VIDEO_CAPTURE |
                         V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
 
+        if (dev->vbi_dev)
+                cap->capabilities |= V4L2_CAP_VBI_CAPTURE;
+
         if (dev->audio_mode.has_audio)
                 cap->capabilities |= V4L2_CAP_AUDIO;