V4L/DVB (8777): tea575x-tuner: replace video_exclusive_open/release
Move the video_exclusive_open/release functionality into the
driver itself.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/sound/tea575x-tuner.h b/include/sound/tea575x-tuner.h
index b62ce3e..b6870cb 100644
--- a/include/sound/tea575x-tuner.h
+++ b/include/sound/tea575x-tuner.h
@@ -43,6 +43,7 @@
unsigned int freq_fixup; /* crystal onboard */
unsigned int val; /* hw value */
unsigned long freq; /* frequency */
+ unsigned long in_use; /* set if the device is in use */
struct snd_tea575x_ops *ops;
void *private_data;
};
diff --git a/sound/i2c/other/tea575x-tuner.c b/sound/i2c/other/tea575x-tuner.c
index 83e9005..621d7fe 100644
--- a/sound/i2c/other/tea575x-tuner.c
+++ b/sound/i2c/other/tea575x-tuner.c
@@ -175,6 +175,23 @@
{
}
+static int snd_tea575x_exclusive_open(struct inode *inode, struct file *file)
+{
+ struct video_device *dev = video_devdata(file);
+ struct snd_tea575x *tea = video_get_drvdata(dev);
+
+ return test_and_set_bit(0, &tea->in_use) ? -EBUSY : 0;
+}
+
+static int snd_tea575x_exclusive_release(struct inode *inode, struct file *file)
+{
+ struct video_device *dev = video_devdata(file);
+ struct snd_tea575x *tea = video_get_drvdata(dev);
+
+ clear_bit(0, &tea->in_use);
+ return 0;
+}
+
/*
* initialize all the tea575x chips
*/
@@ -193,9 +210,10 @@
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");