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V4L/DVB (9152): radio-zoltrix: Add checking for frequency 

This patch adds printk messages, adds checking if frequency is set,
adds return -EINVAL in right places in zoltrix-radio.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Alexey Klimov 2008-10-09 13:46:59 -03:00 committed by Mauro Carvalho Chehab
parent 90b698dd47
commit b4be2048ce
1 changed files with 13 additions and 4 deletions
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17
drivers/media/radio/radio-zoltrix.c
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@ -123,8 +123,11 @@ static int zol_setfreq(struct zol_device *dev, unsigned long freq)
unsigned int stereo = dev->stereo;
int i;
if (freq == 0)
return 1;
if (freq == 0) {
printk(KERN_WARNING "zoltrix: received zero freq. Failed to set.\n");
return -EINVAL;
}
m = (freq / 160 - 8800) * 2;
f = (unsigned long long) m + 0x4d1c;
@ -279,7 +282,10 @@ static int vidioc_s_frequency(struct file *file, void *priv,
struct zol_device *zol = video_drvdata(file);
zol->curfreq = f->frequency;
zol_setfreq(zol, zol->curfreq);
if (zol_setfreq(zol, zol->curfreq) != 0) {
printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
return -EINVAL;
}
return 0;
}
@ -343,7 +349,10 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
return 0;
}
zol->stereo = 1;
zol_setfreq(zol, zol->curfreq);
if (zol_setfreq(zol, zol->curfreq) != 0) {
printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
return -EINVAL;
}
#if 0
/* FIXME: Implement stereo/mono switch on V4L2 */
if (v->mode & VIDEO_SOUND_STEREO) {