linux-kernel - Re: [PATCH 04/14] dell-laptop: Update rfkill state on kill switch

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Date:	Sat, 27 Feb 2010 00:06:57 -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 04/14] dell-laptop: Update rfkill state on kill switch

Hi Matthew,

On Fri, Feb 26, 2010 at 10:18:37AM -0500, Matthew Garrett wrote:
> +
>  static int __init dell_init(void)
>  {
>  	struct calling_interface_buffer buffer;
> @@ -373,6 +410,13 @@ static int __init dell_init(void)
>  		goto fail_rfkill;
>  	}
>  
> +	ret = i8042_install_filter(dell_laptop_i8042_filter);
> +	if (ret) {
> +		printk(KERN_WARNING
> +		       "dell-laptop: Unable to install key filter\n");
> +		goto fail_filter;
> +	}
> +
>  #ifdef CONFIG_ACPI
>  	/* In the event of an ACPI backlight being available, don't
>  	 * register the platform controller.
> @@ -410,6 +454,8 @@ static int __init dell_init(void)
>  	return 0;
>  
>  fail_backlight:
> +	i8042_remove_filter(dell_laptop_i8042_filter);

cancel_delayed_work_sync() is missing.

> +fail_filter:
>  	dell_cleanup_rfkill();
>  fail_rfkill:
>  	platform_device_del(platform_device);
> @@ -424,6 +470,8 @@ fail_platform_driver:
>  
>  static void __exit dell_exit(void)
>  {
> +	cancel_delayed_work_sync(&dell_rfkill_work);
> +	i8042_remove_filter(dell_laptop_i8042_filter);

Wrong order, you need to unregister filter first.

>  	backlight_device_unregister(dell_backlight_device);
>  	dell_cleanup_rfkill();

Thanks.

-- 
Dmitry
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