Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux...

[linux-2.6-omap-h63xx.git] / drivers / media / radio / radio-trust.c

diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
index 193161956253422121f906d46729013c114716a4..e7b111fcd105b6fc79a3a11c922d6edf2a0542e1 100644 (file)
--- a/drivers/media/radio/radio-trust.c
+++ b/drivers/media/radio/radio-trust.c
@@ -78,6 +78,7 @@ static __u16 curtreble;
 static unsigned long curfreq;
 static int curstereo;
 static int curmute;
+static unsigned long in_use;
 
 /* i2c addresses */
 #define TDA7318_ADDR 0x88
@@ -336,10 +337,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
        return 0;
 }
 
+static int trust_exclusive_open(struct inode *inode, struct file *file)
+{
+       return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int trust_exclusive_release(struct inode *inode, struct file *file)
+{
+       clear_bit(0, &in_use);
+       return 0;
+}
+
 static const struct file_operations trust_fops = {
        .owner          = THIS_MODULE,
-       .open           = video_exclusive_open,
-       .release        = video_exclusive_release,
+       .open           = trust_exclusive_open,
+       .release        = trust_exclusive_release,
        .ioctl          = video_ioctl2,
 #ifdef CONFIG_COMPAT
        .compat_ioctl   = v4l_compat_ioctl32,
@@ -366,6 +378,7 @@ static struct video_device trust_radio = {
        .name           = "Trust FM Radio",
        .fops           = &trust_fops,
        .ioctl_ops      = &trust_ioctl_ops,
+       .release        = video_device_release_empty,
 };
 
 static int __init trust_init(void)