From 3ca685aae04960eaa8b2c97baf384996c20cf9ac Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sat, 23 Aug 2008 04:49:13 -0300 Subject: 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 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/radio-sf16fmr2.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'drivers/media/radio/radio-sf16fmr2.c') diff --git a/drivers/media/radio/radio-sf16fmr2.c b/drivers/media/radio/radio-sf16fmr2.c index 6290553d24be..14153ed939d0 100644 --- a/drivers/media/radio/radio-sf16fmr2.c +++ b/drivers/media/radio/radio-sf16fmr2.c @@ -64,6 +64,7 @@ static struct v4l2_queryctrl radio_qctrl[] = { /* this should be static vars for module size */ struct fmr2_device { + unsigned long in_use; int port; int curvol; /* 0-15 */ int mute; @@ -400,10 +401,21 @@ static int vidioc_s_audio(struct file *file, void *priv, static struct fmr2_device fmr2_unit; +static int fmr2_exclusive_open(struct inode *inode, struct file *file) +{ + return test_and_set_bit(0, &fmr2_unit.in_use) ? -EBUSY : 0; +} + +static int fmr2_exclusive_release(struct inode *inode, struct file *file) +{ + clear_bit(0, &fmr2_unit.in_use); + return 0; +} + static const struct file_operations fmr2_fops = { .owner = THIS_MODULE, - .open = video_exclusive_open, - .release = video_exclusive_release, + .open = fmr2_exclusive_open, + .release = fmr2_exclusive_release, .ioctl = video_ioctl2, #ifdef CONFIG_COMPAT .compat_ioctl = v4l_compat_ioctl32, -- cgit v1.2.3