Em Wed, 6 Jan 2016 13:27:20 -0700
Shuah Khan <shuahkh@xxxxxxxxxxxxxxx> escreveu:
> Change au0828_unregister_media_device() to check media
> device media device unregister is in progress and avoid
> calling media_device_unregister() and other cleanup done
> in au0828_unregister_media_device().
>
> Signed-off-by: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
> ---
> drivers/media/usb/au0828/au0828-core.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
> index 886fb28..de357a2 100644
> --- a/drivers/media/usb/au0828/au0828-core.c
> +++ b/drivers/media/usb/au0828/au0828-core.c
> @@ -136,7 +136,9 @@ static void au0828_unregister_media_device(struct au0828_dev *dev)
>
> #ifdef CONFIG_MEDIA_CONTROLLER
> if (dev->media_dev &&
> - media_devnode_is_registered(&dev->media_dev->devnode)) {
> + media_devnode_is_registered(&dev->media_dev->devnode) &&
> + !media_device_is_unregister_in_progress(dev->media_dev)) {
> +
A kref would likely work better here.
> media_device_unregister(dev->media_dev);
> media_device_cleanup(dev->media_dev);
> dev->media_dev = NULL;
--
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