linux-kernel - Re: [PATCH 2/2 update] misc: Add dell-laptop driver

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Date:	Wed, 03 Dec 2008 13:01:25 +0000
From:	none <alan-jenkins@...fmail.co.uk>
To:	Matthew Garrett <mjg59@...f.ucam.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Matt_Domsch@...l.com, greg@...ah.com,
	linux-acpi@...r.kernel.org, Richard Purdie <rpurdie@...ys.net>,
	Ivo van Doorn <ivdoorn@...il.com>
Subject: Re: [PATCH 2/2 update] misc: Add dell-laptop driver

Matthew Garrett wrote:
> misc: Add dell-laptop driver
>     
> Add a driver for controling Dell-specific backlight and rfkill interfaces.
> This driver makes use of the dcdbas interface to the Dell firmware to allow
> the backlight and rfkill interfaces on Dell systems to be driven through the
> standardised sysfs interfaces.
>     
> Signed-off-by: Matthew Garrett <mjg@...hat.com>
>
> ---
>
> Contains Andrew's suggested updates, plus a fix for a leak on the init 
> error path.
>   

Sorry, I should have mentioned this in my first message:

> +	if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {
> +		wifi_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_WLAN);
> +		if (!wifi_rfkill)
> +			goto err_wifi;
> +		wifi_rfkill->name = "dell-wifi";
> +		wifi_rfkill->toggle_radio = dell_wifi_set;
> +		wifi_rfkill->get_state = dell_wifi_get;
>   

The rfkill doc (and code) say that you also need to initialize
wifi_rfkill->state to the current state of the hardware.

> +		ret = rfkill_register(wifi_rfkill);
> +		if (ret)
> +			goto err_wifi;
> +	}
> +

Regards
Alan
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