V4L/DVB (13866): gspca - main: Add the cam flag 'no_urb_create'.

[safe/jmp/linux-2.6] / drivers / media / video / c-qcam.c

diff --git a/drivers/media/video/c-qcam.c b/drivers/media/video/c-qcam.c
index 7f6c6b4..e2cbeba 100644 (file)
--- a/drivers/media/video/c-qcam.c
+++ b/drivers/media/video/c-qcam.c
@@ -51,6 +51,7 @@ struct qcam_device {
        int contrast, brightness, whitebal;
        int top, left;
        unsigned int bidirectional;
+       unsigned long in_use;
        struct mutex lock;
 };
 
@@ -499,8 +500,7 @@ static long qc_capture(struct qcam_device *q, char __user *buf, unsigned long le
  *     Video4linux interfacing
  */
 
-static int qcam_do_ioctl(struct inode *inode, struct file *file,
-                        unsigned int cmd, void *arg)
+static long qcam_do_ioctl(struct file *file, unsigned int cmd, void *arg)
 {
        struct video_device *dev = video_devdata(file);
        struct qcam_device *qcam=(struct qcam_device *)dev;
@@ -665,10 +665,10 @@ static int qcam_do_ioctl(struct inode *inode, struct file *file,
        return 0;
 }
 
-static int qcam_ioctl(struct inode *inode, struct file *file,
-                    unsigned int cmd, unsigned long arg)
+static long qcam_ioctl(struct file *file,
+                     unsigned int cmd, unsigned long arg)
 {
-       return video_usercopy(inode, file, cmd, arg, qcam_do_ioctl);
+       return video_usercopy(file, cmd, arg, qcam_do_ioctl);
 }
 
 static ssize_t qcam_read(struct file *file, char __user *buf,
@@ -687,23 +687,37 @@ static ssize_t qcam_read(struct file *file, char __user *buf,
        return len;
 }
 
+static int qcam_exclusive_open(struct file *file)
+{
+       struct video_device *dev = video_devdata(file);
+       struct qcam_device *qcam = (struct qcam_device *)dev;
+
+       return test_and_set_bit(0, &qcam->in_use) ? -EBUSY : 0;
+}
+
+static int qcam_exclusive_release(struct file *file)
+{
+       struct video_device *dev = video_devdata(file);
+       struct qcam_device *qcam = (struct qcam_device *)dev;
+
+       clear_bit(0, &qcam->in_use);
+       return 0;
+}
+
 /* video device template */
-static const struct file_operations qcam_fops = {
+static const struct v4l2_file_operations qcam_fops = {
        .owner          = THIS_MODULE,
-       .open           = video_exclusive_open,
-       .release        = video_exclusive_release,
+       .open           = qcam_exclusive_open,
+       .release        = qcam_exclusive_release,
        .ioctl          = qcam_ioctl,
-#ifdef CONFIG_COMPAT
-       .compat_ioctl   = v4l_compat_ioctl32,
-#endif
        .read           = qcam_read,
-       .llseek         = no_llseek,
 };
 
 static struct video_device qcam_template=
 {
        .name           = "Colour QuickCam",
        .fops           = &qcam_fops,
+       .release        = video_device_release_empty,
 };
 
 /* Initialize the QuickCam driver control structure. */
@@ -795,8 +809,8 @@ static int init_cqcam(struct parport *port)
                return -ENODEV;
        }
 
-       printk(KERN_INFO "video%d: Colour QuickCam found on %s\n",
-              qcam->vdev.minor, qcam->pport->name);
+       printk(KERN_INFO "%s: Colour QuickCam found on %s\n",
+              video_device_node_name(&qcam->vdev), qcam->pport->name);
 
        qcams[num_cams++] = qcam;