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>
diff --git a/drivers/media/radio/radio-tea5764.c b/drivers/media/radio/radio-tea5764.c
index 3cd76dd..730ffd9 100644
--- a/drivers/media/radio/radio-tea5764.c
+++ b/drivers/media/radio/radio-tea5764.c
@@ -349,7 +349,7 @@
{
struct tea5764_device *radio = video_drvdata(file);
- if (f->tuner != 0)
+ if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
return -EINVAL;
if (f->frequency == 0) {
/* We special case this as a power down control. */
@@ -370,6 +370,8 @@
struct tea5764_device *radio = video_drvdata(file);
struct tea5764_regs *r = &radio->regs;
+ if (f->tuner != 0)
+ return -EINVAL;
tea5764_i2c_read(radio);
memset(f, 0, sizeof(f));
f->type = V4L2_TUNER_RADIO;