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authorHans Verkuil <hverkuil@xs4all.nl>2009-11-27 04:33:25 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-16 00:17:53 -0200
commita3a9e287daa1f299e318161b790b1c5902b1d869 (patch)
tree1f20db447f28a6346ce9d9fe2ebb0ff3eac65f96 /drivers/media/radio/radio-maxiradio.c
parentcda4303f555316930a219cd7c03a1925526145f0 (diff)
V4L/DVB (13547): radio: add trivial checks on the tuner and type args.
Many radio drivers did not check the tuner and type field correctly for g/s_frequency. These checks have now been added. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/radio/radio-maxiradio.c')
-rw-r--r--drivers/media/radio/radio-maxiradio.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
index 3da51fe8fb9..44b4dbedb32 100644
--- a/drivers/media/radio/radio-maxiradio.c
+++ b/drivers/media/radio/radio-maxiradio.c
@@ -262,6 +262,8 @@ static int vidioc_s_frequency(struct file *file, void *priv,
{
struct maxiradio *dev = video_drvdata(file);
+ if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
+ return -EINVAL;
if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) {
dprintk(dev, 1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n",
f->frequency / 16000,
@@ -285,6 +287,8 @@ static int vidioc_g_frequency(struct file *file, void *priv,
{
struct maxiradio *dev = video_drvdata(file);
+ if (f->tuner != 0)
+ return -EINVAL;
f->type = V4L2_TUNER_RADIO;
f->frequency = dev->freq;