Merge branch 'master' into tk71

[mv-sheeva.git] / drivers / media / video / v4l2-device.c

diff --git a/drivers/media/video/v4l2-device.c b/drivers/media/video/v4l2-device.c
index 0b08f96b74a5ed5c750fdcc7541d2e38f069d79f..ce64fe16bc604137d3522af06931ab562983865c 100644 (file)
--- a/drivers/media/video/v4l2-device.c
+++ b/drivers/media/video/v4l2-device.c
@@ -35,6 +35,7 @@ int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev)
 
        INIT_LIST_HEAD(&v4l2_dev->subdevs);
        spin_lock_init(&v4l2_dev->lock);
+       mutex_init(&v4l2_dev->ioctl_lock);
        v4l2_dev->dev = dev;
        if (dev == NULL) {
                /* If dev == NULL, then name must be filled in by the caller */
@@ -99,6 +100,7 @@ void v4l2_device_unregister(struct v4l2_device *v4l2_dev)
                           is a platform bus, then it is never deleted. */
                        if (client)
                                i2c_unregister_device(client);
+                       continue;
                }
 #endif
 #if defined(CONFIG_SPI)
@@ -107,6 +109,7 @@ void v4l2_device_unregister(struct v4l2_device *v4l2_dev)
 
                        if (spi)
                                spi_unregister_device(spi);
+                       continue;
                }
 #endif
        }
@@ -125,11 +128,19 @@ int v4l2_device_register_subdev(struct v4l2_device *v4l2_dev,
        WARN_ON(sd->v4l2_dev != NULL);
        if (!try_module_get(sd->owner))
                return -ENODEV;
+       sd->v4l2_dev = v4l2_dev;
+       if (sd->internal_ops && sd->internal_ops->registered) {
+               err = sd->internal_ops->registered(sd);
+               if (err)
+                       return err;
+       }
        /* This just returns 0 if either of the two args is NULL */
        err = v4l2_ctrl_add_handler(v4l2_dev->ctrl_handler, sd->ctrl_handler);
-       if (err)
+       if (err) {
+               if (sd->internal_ops && sd->internal_ops->unregistered)
+                       sd->internal_ops->unregistered(sd);
                return err;
-       sd->v4l2_dev = v4l2_dev;
+       }
        spin_lock(&v4l2_dev->lock);
        list_add_tail(&sd->list, &v4l2_dev->subdevs);
        spin_unlock(&v4l2_dev->lock);
@@ -145,6 +156,8 @@ void v4l2_device_unregister_subdev(struct v4l2_subdev *sd)
        spin_lock(&sd->v4l2_dev->lock);
        list_del(&sd->list);
        spin_unlock(&sd->v4l2_dev->lock);
+       if (sd->internal_ops && sd->internal_ops->unregistered)
+               sd->internal_ops->unregistered(sd);
        sd->v4l2_dev = NULL;
        module_put(sd->owner);
 }