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authorHans Verkuil <hverkuil@xs4all.nl>2008-08-23 11:49:13 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2008-10-12 15:36:53 +0400
commit3ca685aae04960eaa8b2c97baf384996c20cf9ac (patch)
treea4d99449643380c62b11a05d93f81b6b8a2f82d7 /drivers/media/radio/radio-aztech.c
parent3b5df8ea40ac533c62b8e5f9f173d985665fc752 (diff)
downloadlinux-3ca685aae04960eaa8b2c97baf384996c20cf9ac.tar.xz
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-aztech.c')
-rw-r--r--drivers/media/radio/radio-aztech.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c
index 628c689e3ffe..ae18a7cf0d59 100644
--- a/drivers/media/radio/radio-aztech.c
+++ b/drivers/media/radio/radio-aztech.c
@@ -70,6 +70,7 @@ static struct mutex lock;
struct az_device
{
+ unsigned long in_use;
int curvol;
unsigned long curfreq;
int stereo;
@@ -342,10 +343,21 @@ static int vidioc_s_ctrl (struct file *file, void *priv,
static struct az_device aztech_unit;
+static int aztech_exclusive_open(struct inode *inode, struct file *file)
+{
+ return test_and_set_bit(0, &aztech_unit.in_use) ? -EBUSY : 0;
+}
+
+static int aztech_exclusive_release(struct inode *inode, struct file *file)
+{
+ clear_bit(0, &aztech_unit.in_use);
+ return 0;
+}
+
static const struct file_operations aztech_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = aztech_exclusive_open,
+ .release = aztech_exclusive_release,
.ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,