linux-kernel - Re: [PATCH v2 2/2] dell-wmi-base: Handle META key Lock/Unlock events

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]

Message-ID: <20241031181924.zlx5d6lh5bv2v2le@pali>
Date: Thu, 31 Oct 2024 19:19:24 +0100
From: Pali Rohár <pali@...nel.org>
To: Kurt Borja <kuurtb@...il.com>
Cc: Dell.Client.Kernel@...l.com, hdegoede@...hat.com,
	ilpo.jarvinen@...ux.intel.com, linux-kernel@...r.kernel.org,
	platform-driver-x86@...r.kernel.org, w_armin@....de
Subject: Re: [PATCH v2 2/2] dell-wmi-base: Handle META key Lock/Unlock events

On Thursday 31 October 2024 12:44:42 Kurt Borja wrote:
> Some Alienware devices have a key that locks/unlocks the Meta key. This
> key triggers a WMI event that should be ignored by the kernel, as it's
> handled by internally the firmware.
> 
> There is no known way of changing this default behavior. The firmware
> would lock/unlock the Meta key, regardless of how the event is handled.
> 
> Tested on an Alienware x15 R1.
> 
> Signed-off-by: Kurt Borja <kuurtb@...il.com>

Acked-by: Pali Rohár <pali@...nel.org>

> ---
> v2:
>  - Fixed entry style
>  - Commit message clarifies firmware behavior
>  - Commit message now has "Tested on"
> ---
>  drivers/platform/x86/dell/dell-wmi-base.c | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/drivers/platform/x86/dell/dell-wmi-base.c b/drivers/platform/x86/dell/dell-wmi-base.c
> index 502783a7a..ce421e51b 100644
> --- a/drivers/platform/x86/dell/dell-wmi-base.c
> +++ b/drivers/platform/x86/dell/dell-wmi-base.c
> @@ -80,6 +80,12 @@ static const struct dmi_system_id dell_wmi_smbios_list[] __initconst = {
>  static const struct key_entry dell_wmi_keymap_type_0000[] = {
>  	{ KE_IGNORE, 0x003a, { KEY_CAPSLOCK } },
>  
> +	/* Meta key lock */
> +	{ KE_IGNORE, 0xe000, { KEY_RIGHTMETA } },
> +
> +	/* Meta key unlock */
> +	{ KE_IGNORE, 0xe001, { KEY_RIGHTMETA } },
> +
>  	/* Key code is followed by brightness level */
>  	{ KE_KEY,    0xe005, { KEY_BRIGHTNESSDOWN } },
>  	{ KE_KEY,    0xe006, { KEY_BRIGHTNESSUP } },
> -- 
> 2.47.0
>