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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-maxiradio.c | |
| parent | V4L/DVB (8774): cx18: Have CX23418 release buffers at end of capture. (diff) | |
| download | linux-dev-3ca685aae04960eaa8b2c97baf384996c20cf9ac.tar.xz linux-dev-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-maxiradio.c')
| -rw-r--r-- | drivers/media/radio/radio-maxiradio.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c index 0cc6fcb041fd..263ef8b02fd8 100644 --- a/drivers/media/radio/radio-maxiradio.c +++ b/drivers/media/radio/radio-maxiradio.c @@ -85,6 +85,7 @@ static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ; static int radio_nr = -1; module_param(radio_nr, int, 0); +static unsigned long in_use; #define FREQ_LO 50*16000 #define FREQ_HI 150*16000 @@ -99,10 +100,21 @@ module_param(radio_nr, int, 0); #define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF) +static int maxiradio_exclusive_open(struct inode *inode, struct file *file) +{ + return test_and_set_bit(0, &in_use) ? -EBUSY : 0; +} + +static int maxiradio_exclusive_release(struct inode *inode, struct file *file) +{ + clear_bit(0, &in_use); + return 0; +} + static const struct file_operations maxiradio_fops = { .owner = THIS_MODULE, - .open = video_exclusive_open, - .release = video_exclusive_release, + .open = maxiradio_exclusive_open, + .release = maxiradio_exclusive_release, .ioctl = video_ioctl2, #ifdef CONFIG_COMPAT .compat_ioctl = v4l_compat_ioctl32, |