linux-kernel - Re: [PATCH v3] dell-laptop: Fix keyboard led max_brightness property for Dell Latitude E6410

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Message-ID: <20171103011843.GF7971@fury>
Date:   Thu, 2 Nov 2017 18:18:43 -0700
From:   Darren Hart <dvhart@...radead.org>
To:     Pali Rohár <pali.rohar@...il.com>
Cc:     Matthew Garrett <mjg59@...f.ucam.org>,
        Andy Shevchenko <andy@...radead.org>,
        "Gabriel M. Elder" <gabriel@...gnowsys.com>,
        Gabriele Mazzotta <gabriele.mzt@...il.com>,
        Mario.Limonciello@...l.com, platform-driver-x86@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] dell-laptop: Fix keyboard led max_brightness property
 for Dell Latitude E6410

On Thu, Nov 02, 2017 at 09:25:24PM +0100, Pali Rohár wrote:
> This machine reports number of keyboard backlight led levels, instead of
> value of the last led level index. Therefore max_brightness properly needs
> to be subtracted by 1 to match led max_brightness API.
> 
> Signed-off-by: Pali Rohár <pali.rohar@...il.com>
> Reported-by: Gabriel M. Elder <gabriel@...gnowsys.com>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=196913
> ---
> Changes since v2:
> * Rename quirk entry to kbd_led_levels_off_1
> Changes since v1:
> * Update kbd_info.levels at initialization time based on quirk
> ---
>  drivers/platform/x86/dell-laptop.c |   17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
> index f42159f..7424e53 100644
> --- a/drivers/platform/x86/dell-laptop.c
> +++ b/drivers/platform/x86/dell-laptop.c
> @@ -49,6 +49,7 @@
>  
>  struct quirk_entry {
>  	u8 touchpad_led;
> +	u8 kbd_led_levels_off_1;

I believe you and Andy agreed to use a boolean type here?

-- 
Darren Hart
VMware Open Source Technology Center