linux-kernel - Re: [PATCH 3/3] ideapad: add backlight driver

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Message-ID: <20110622194049.GB8861@srcf.ucam.org>
Date:	Wed, 22 Jun 2011 20:40:49 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Ike Panhc <ike.pan@...onical.com>
Cc:	linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
	corentin.chary@...il.com, Richard Purdie <rpurdie@...ys.net>
Subject: Re: [PATCH 3/3] ideapad: add backlight driver

On Wed, Jun 22, 2011 at 04:07:38PM +0800, Ike Panhc wrote:

> -static void ideapad_sync_rfk_state(struct acpi_device *adevice)
> +static void ideapad_sync_rfk_state(struct ideapad_private *priv)
>  {

This should be a separate patch.

> -static void __devexit ideapad_unregister_rfkill(struct acpi_device *adevice,
> -						int dev)
> +static void ideapad_unregister_rfkill(struct acpi_device *adevice, int dev)

This also seems unrelated.

> +static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
> +{
> +	unsigned long now;
> +
> +	if (read_ec_data(ideapad_handle, 0x12, &now))
> +		return -EAGAIN;

Description says you're using commands on the VPC2004 device, but it 
looks like you're just poking the embedded controller? Are you sure the 
EC offsets are stable?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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