linux-kernel - Re: [PATCH 5/6] backlight: Also nuke BL_CORE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Mon, 30 Apr 2018 13:24:16 +0300
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Daniel Vetter <daniel.vetter@...ll.ch>,
        DRI Development <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>
Cc:     Daniel Vetter <daniel.vetter@...el.com>,
        Daniel Vetter <daniel.vetter@...ll.ch>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Lee Jones <lee.jones@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>
Subject: Re: [PATCH 5/6] backlight: Also nuke BL_CORE_DRIVER1

On Wed, 25 Apr 2018, Daniel Vetter <daniel.vetter@...ll.ch> wrote:
> Now that the 3 drivers using this are cleaned up we can also remove
> this final bit of confusion of leaking driver internals into the
> backlight power interface.
>
> The backlight power interface itself is still a massive mess.
>
> Cc: Lee Jones <lee.jones@...aro.org>
> Cc: Daniel Thompson <daniel.thompson@...aro.org>
> Cc: Jingoo Han <jingoohan1@...il.com>
> Acked-by: Daniel Thompson <daniel.thompson@...aro.org>
> Signed-off-by: Daniel Vetter <daniel.vetter@...el.com>
> ---
>  include/linux/backlight.h | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/include/linux/backlight.h b/include/linux/backlight.h
> index 1db67662bfcb..7fbf0539e14a 100644
> --- a/include/linux/backlight.h
> +++ b/include/linux/backlight.h
> @@ -84,7 +84,6 @@ struct backlight_properties {
>  
>  #define BL_CORE_SUSPENDED	(1 << 0)	/* backlight is suspended */
>  #define BL_CORE_FBBLANK		(1 << 1)	/* backlight is under an fb blank event */
> -#define BL_CORE_DRIVER1		(1 << 31)	/* reserved for driver specific use */

Please also remove the

	/* Upper 4 bits are reserved for driver internal use */

comment a few lines up to not give anyone ideas.

With that,

Reviewed-by: Jani Nikula <jani.nikula@...el.com>

>  
>  };

-- 
Jani Nikula, Intel Open Source Technology Center