linux-kernel - Re: [PATCH 05/14] dell-laptop: Fix platform device unregistration

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Date:	Sat, 27 Feb 2010 00:09:26 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Matthew Garrett <mjg@...hat.com>
Cc:	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/14] dell-laptop: Fix platform device unregistration

On Fri, Feb 26, 2010 at 10:18:38AM -0500, Matthew Garrett wrote:
> dell-laptop currently fails to clean up its platform device correctly.
> Make sure that it's unregistered.
> 
> Signed-off-by: Matthew Garrett <mjg@...hat.com>
> ---
>  drivers/platform/x86/dell-laptop.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
> index 9d7e0be..b4c2190 100644
> --- a/drivers/platform/x86/dell-laptop.c
> +++ b/drivers/platform/x86/dell-laptop.c
> @@ -474,6 +474,10 @@ static void __exit dell_exit(void)
>  	i8042_remove_filter(dell_laptop_i8042_filter);
>  	backlight_device_unregister(dell_backlight_device);
>  	dell_cleanup_rfkill();
> +	if (platform_device) {
> +		platform_device_del(platform_device);

That should be platform_device_unregister(), otherwise you are missing
final platform_device_put().

> +		platform_driver_unregister(&platform_driver);
> +	}
>  }
>  

-- 
Dmitry
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