1 files changed, 15 insertions, 2 deletions

diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
index 193161956253..e7b111fcd105 100644
--- 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)