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[media] em28xx: fix tuner/frequency handling 

v4l2-compliance found problems with frequency clamping that wasn't
reported correctly and missing tuner index checks.
Also removed unnecessary tuner type checks (these are now done by the
v4l2 core).

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2012-09-06 10:07:25 -03:00 committed by Mauro Carvalho Chehab
parent 319a55fbe4
commit 20deebfe17
1 changed files with 5 additions and 8 deletions
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13
drivers/media/usb/em28xx/em28xx-video.c
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@ -1322,7 +1322,6 @@ static int vidioc_g_tuner(struct file *file, void *priv,
return -EINVAL;
strcpy(t->name, "Tuner");
t->type = V4L2_TUNER_ANALOG_TV;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_tuner, t);
return 0;
@ -1352,7 +1351,9 @@ static int vidioc_g_frequency(struct file *file, void *priv,
struct em28xx_fh *fh = priv;
struct em28xx *dev = fh->dev;
f->type = fh->radio ? V4L2_TUNER_RADIO : V4L2_TUNER_ANALOG_TV;
if (0 != f->tuner)
return -EINVAL;
f->frequency = dev->ctl_freq;
return 0;
}
@ -1371,13 +1372,9 @@ static int vidioc_s_frequency(struct file *file, void *priv,
if (0 != f->tuner)
return -EINVAL;
if (unlikely(0 == fh->radio && f->type != V4L2_TUNER_ANALOG_TV))
return -EINVAL;
if (unlikely(1 == fh->radio && f->type != V4L2_TUNER_RADIO))
return -EINVAL;
dev->ctl_freq = f->frequency;
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_frequency, f);
v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, g_frequency, f);
dev->ctl_freq = f->frequency;
return 0;
}