[RFC 07/13] v4l2: device_register_subdev_nodes: allow calling multiple times

[Pavel Machek]

From: Sebastian Reichel <sre@xxxxxxxxxx>

Without this, exposure / gain controls do not work in the camera application.

Signed-off-by: Sebastian Reichel <sre@xxxxxxxxxx>
Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@xxxxxxxxx>
Signed-off-by: Pavel Machek <pavel@xxxxxx>
---
 drivers/media/v4l2-core/v4l2-device.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c
index f364cc1..b3afbe8 100644
--- a/drivers/media/v4l2-core/v4l2-device.c
+++ b/drivers/media/v4l2-core/v4l2-device.c
@@ -235,6 +235,9 @@ int v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev)
 		if (!(sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE))
 			continue;
 
+		if(sd->devnode)
+			continue;
+
 		vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
 		if (!vdev) {
 			err = -ENOMEM;
-- 
2.1.4


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