V4L/DVB (8776): radio: replace video_exclusive_open/release

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

diff --git a/drivers/media/radio/radio-maestro.c b/drivers/media/radio/radio-maestro.c
index 9ef0a763eeb72a54570324a7b3112a549cdfdcb6..03c20948eef28698efcf9fd5b27e89d5abb09a9a 100644 (file)
--- a/drivers/media/radio/radio-maestro.c
+++ b/drivers/media/radio/radio-maestro.c
@@ -75,7 +75,21 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 static int radio_nr = -1;
 module_param(radio_nr, int, 0);
 
+static unsigned long in_use;
+
 static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
+
+static int maestro_exclusive_open(struct inode *inode, struct file *file)
+{
+       return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int maestro_exclusive_release(struct inode *inode, struct file *file)
+{
+       clear_bit(0, &in_use);
+       return 0;
+}
+
 static void maestro_remove(struct pci_dev *pdev);
 
 static struct pci_device_id maestro_r_pci_tbl[] = {
@@ -98,8 +112,8 @@ static struct pci_driver maestro_r_driver = {
 
 static const struct file_operations maestro_fops = {
        .owner          = THIS_MODULE,
-       .open           = video_exclusive_open,
-       .release        = video_exclusive_release,
+       .open           = maestro_exclusive_open,
+       .release        = maestro_exclusive_release,
        .ioctl          = video_ioctl2,
 #ifdef CONFIG_COMPAT
        .compat_ioctl   = v4l_compat_ioctl32,