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| author | Hans Verkuil <hverkuil@xs4all.nl> | 2008-08-23 04:49:13 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-12 09:36:53 -0200 |
| commit | 3ca685aae04960eaa8b2c97baf384996c20cf9ac (patch) | |
| tree | a4d99449643380c62b11a05d93f81b6b8a2f82d7 /drivers/media/radio/radio-zoltrix.c | |
| parent | 3b5df8ea40ac533c62b8e5f9f173d985665fc752 (diff) | |
| download | lwn-3ca685aae04960eaa8b2c97baf384996c20cf9ac.tar.gz lwn-3ca685aae04960eaa8b2c97baf384996c20cf9ac.zip | |
V4L/DVB (8776): radio: 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 'drivers/media/radio/radio-zoltrix.c')
| -rw-r--r-- | drivers/media/radio/radio-zoltrix.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c index 51d57ed3b3e1..4d76e710194b 100644 --- a/drivers/media/radio/radio-zoltrix.c +++ b/drivers/media/radio/radio-zoltrix.c @@ -69,6 +69,7 @@ static int io = CONFIG_RADIO_ZOLTRIX_PORT; static int radio_nr = -1; struct zol_device { + unsigned long in_use; int port; int curvol; unsigned long curfreq; @@ -396,11 +397,22 @@ static int vidioc_s_audio(struct file *file, void *priv, static struct zol_device zoltrix_unit; +static int zoltrix_exclusive_open(struct inode *inode, struct file *file) +{ + return test_and_set_bit(0, &zoltrix_unit.in_use) ? -EBUSY : 0; +} + +static int zoltrix_exclusive_release(struct inode *inode, struct file *file) +{ + clear_bit(0, &zoltrix_unit.in_use); + return 0; +} + static const struct file_operations zoltrix_fops = { .owner = THIS_MODULE, - .open = video_exclusive_open, - .release = video_exclusive_release, + .open = zoltrix_exclusive_open, + .release = zoltrix_exclusive_release, .ioctl = video_ioctl2, #ifdef CONFIG_COMPAT .compat_ioctl = v4l_compat_ioctl32, |