[PATCH 4/6] drivers/media/media-device: move debug log before _devnode_unregister()

From: Max Kellermann
Date: Mon Mar 21 2016 - 09:31:21 EST


After media_devnode_unregister(), the struct media_device may be freed
already, and dereferencing it may crash.

Signed-off-by: Max Kellermann <max@xxxxxxxxxxx>
---
drivers/media/media-device.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index e9219f5..5c4669c 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -745,9 +745,8 @@ void media_device_unregister(struct media_device *mdev)
spin_unlock(&mdev->lock);

device_remove_file(&mdev->devnode.dev, &dev_attr_model);
+ dev_dbg(mdev->dev, "Media device unregistering\n");
media_devnode_unregister(&mdev->devnode);
-
- dev_dbg(mdev->dev, "Media device unregistered\n");
}
EXPORT_SYMBOL_GPL(media_device_unregister);