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| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-08-29 18:35:43 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-08-29 18:35:43 -0300 |
| commit | e8beadde87198bcede646d9a96042f017d115d7b (patch) | |
| tree | 49621d71d57cff7daacae777f234f62e00f6dd5a /linux/sound/i2c/other/tea575x-tuner.c | |
| parent | b411ce2ea34831c61d02f0ce0278f525abd2e3c3 (diff) | |
| parent | fcf7b1133c054c011cd1cb75ac466333f61812f8 (diff) | |
| download | mediapointer-dvb-s2-e8beadde87198bcede646d9a96042f017d115d7b.tar.gz mediapointer-dvb-s2-e8beadde87198bcede646d9a96042f017d115d7b.tar.bz2 | |
merge? http://www.linuxtv.org/hg/~hverkuil/v4l-dvb-empress
From: Mauro Carvalho Chehab <mchehab@infradead.org>
Priority: normal
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'linux/sound/i2c/other/tea575x-tuner.c')
| -rw-r--r-- | linux/sound/i2c/other/tea575x-tuner.c | 33 |
1 files changed, 28 insertions, 5 deletions
diff --git a/linux/sound/i2c/other/tea575x-tuner.c b/linux/sound/i2c/other/tea575x-tuner.c index c4bd65c94..2d07c8ea5 100644 --- a/linux/sound/i2c/other/tea575x-tuner.c +++ b/linux/sound/i2c/other/tea575x-tuner.c @@ -92,11 +92,10 @@ static void snd_tea575x_set_freq(struct snd_tea575x *tea) static int snd_tea575x_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long data) { - struct video_device *dev = video_devdata(file); #if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17) - tea575x_t *tea = video_get_drvdata(dev); + tea575x_t *tea = video_drvdata(file); #else - struct snd_tea575x *tea = video_get_drvdata(dev); + struct snd_tea575x *tea = video_drvdata(file); #endif void __user *arg = (void __user *)data; @@ -186,6 +185,29 @@ static void snd_tea575x_release(struct video_device *vfd) { } +static int snd_tea575x_exclusive_open(struct inode *inode, struct file *file) +{ +#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17) + tea575x_t *tea = video_drvdata(file); +#else + struct snd_tea575x *tea = video_drvdata(file); +#endif + + return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0; +} + +static int snd_tea575x_exclusive_release(struct inode *inode, struct file *file) +{ +#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,17) + tea575x_t *tea = video_drvdata(file); +#else + struct snd_tea575x *tea = video_drvdata(file); +#endif + + clear_bit(0, &tea->in_use); + return 0; +} + /* * initialize all the tea575x chips */ @@ -208,9 +230,10 @@ void snd_tea575x_init(struct snd_tea575x *tea) tea->vd.release = snd_tea575x_release; video_set_drvdata(&tea->vd, tea); tea->vd.fops = &tea->fops; + tea->in_use = 0; tea->fops.owner = tea->card->module; - tea->fops.open = video_exclusive_open; - tea->fops.release = video_exclusive_release; + tea->fops.open = snd_tea575x_exclusive_open; + tea->fops.release = snd_tea575x_exclusive_release; tea->fops.ioctl = snd_tea575x_ioctl; if (video_register_device(&tea->vd, VFL_TYPE_RADIO, tea->dev_nr - 1) < 0) { snd_printk(KERN_ERR "unable to register tea575x tuner\n"); |