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>

diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index a5632c7e6438226d4a0bfdf2a3ddd6b43184fda4..8955b7b5365f53709fb22081673270f630856b32 100644 (file)
--- 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;