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authorHans Verkuil <hverkuil@xs4all.nl>2008-08-23 04:52:00 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-10-12 09:36:53 -0200
commit2f3d00250ae5b1d2727e2723da805290ec408503 (patch)
tree2537a9f10941f1c7ce31735ba9d073e7663df7cf /sound/i2c
parent3ca685aae04960eaa8b2c97baf384996c20cf9ac (diff)
downloadlinux-linaro-stable-2f3d00250ae5b1d2727e2723da805290ec408503.tar.gz
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>
Diffstat (limited to 'sound/i2c')
-rw-r--r--sound/i2c/other/tea575x-tuner.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/sound/i2c/other/tea575x-tuner.c b/sound/i2c/other/tea575x-tuner.c
index 83e90057270e..621d7fe3074b 100644
--- a/sound/i2c/other/tea575x-tuner.c
+++ b/sound/i2c/other/tea575x-tuner.c
@@ -175,6 +175,23 @@ static void snd_tea575x_release(struct video_device *vfd)
{
}
+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 @@ 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");