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>
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@ -123,8 +123,11 @@ static int zol_setfreq(struct zol_device *dev, unsigned long freq)
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unsigned int stereo = dev->stereo;
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int i;
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if (freq == 0)
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return 1;
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if (freq == 0) {
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printk(KERN_WARNING "zoltrix: received zero freq. Failed to set.\n");
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return -EINVAL;
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}
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m = (freq / 160 - 8800) * 2;
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f = (unsigned long long) m + 0x4d1c;
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@ -279,7 +282,10 @@ static int vidioc_s_frequency(struct file *file, void *priv,
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struct zol_device *zol = video_drvdata(file);
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zol->curfreq = f->frequency;
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zol_setfreq(zol, zol->curfreq);
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if (zol_setfreq(zol, zol->curfreq) != 0) {
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printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
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return -EINVAL;
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}
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return 0;
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}
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@ -343,7 +349,10 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
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return 0;
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}
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zol->stereo = 1;
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zol_setfreq(zol, zol->curfreq);
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if (zol_setfreq(zol, zol->curfreq) != 0) {
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printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
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return -EINVAL;
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}
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#if 0
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/* FIXME: Implement stereo/mono switch on V4L2 */
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if (v->mode & VIDEO_SOUND_STEREO) {
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