linux-kernel - Re: [PATCH] platform/x86: asus-wmi: Ignore WMI events with codes 0x7B, 0xC0

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] [day] [month] [year] [list]

Date:   Mon, 15 May 2023 14:58:46 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Alexandru Sorodoc <ealex95@...il.com>,
        Corentin Chary <corentin.chary@...il.com>,
        Mark Gross <markgross@...nel.org>
Cc:     acpi4asus-user@...ts.sourceforge.net,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] platform/x86: asus-wmi: Ignore WMI events with codes
 0x7B, 0xC0

Hi,

On 5/12/23 12:15, Alexandru Sorodoc wrote:
> On ASUS GU604V the key 0x7B is issued when the charger is connected or
> disconnected, and key 0xC0 is issued when an external display is
> connected or disconnected.
> 
> This commit maps them to KE_IGNORE to slience kernel messages about
> unknown keys, such as:
> 
>     kernel: asus_wmi: Unknown key code 0x7b
> 
> Signed-off-by: Alexandru Sorodoc <ealex95@...il.com>

Thank you for your patch, I've applied this patch to my fixes
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=fixes

Note it will show up in my fixes branch once I've pushed my
local branch there, which might take a while.

I will include this patch in my next fixes pull-req to Linus
for the current kernel development cycle.

Regards,

Hans


> ---
> I'm not sure what those keys events actually mean. I assume they are
> some redundant notifications because no laptop functionality seems to
> depend on them.
> 
> If there is anything I can check or investigate please let me know.
> 
> Thanks,
> Alex
> 
>  drivers/platform/x86/asus-nb-wmi.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
> index e2c9a68d12df..fdf7da06af30 100644
> --- a/drivers/platform/x86/asus-nb-wmi.c
> +++ b/drivers/platform/x86/asus-nb-wmi.c
> @@ -555,6 +555,7 @@ static const struct key_entry asus_nb_wmi_keymap[] = {
>  	{ KE_KEY, 0x71, { KEY_F13 } }, /* General-purpose button */
>  	{ KE_IGNORE, 0x79, },  /* Charger type dectection notification */
>  	{ KE_KEY, 0x7a, { KEY_ALS_TOGGLE } }, /* Ambient Light Sensor Toggle */
> +	{ KE_IGNORE, 0x7B, }, /* Charger connect/disconnect notification */
>  	{ KE_KEY, 0x7c, { KEY_MICMUTE } },
>  	{ KE_KEY, 0x7D, { KEY_BLUETOOTH } }, /* Bluetooth Enable */
>  	{ KE_KEY, 0x7E, { KEY_BLUETOOTH } }, /* Bluetooth Disable */
> @@ -584,6 +585,7 @@ static const struct key_entry asus_nb_wmi_keymap[] = {
>  	{ KE_KEY, 0xAE, { KEY_FN_F5 } }, /* Fn+F5 fan mode on 2020+ */
>  	{ KE_KEY, 0xB3, { KEY_PROG4 } }, /* AURA */
>  	{ KE_KEY, 0xB5, { KEY_CALC } },
> +	{ KE_IGNORE, 0xC0, }, /* External display connect/disconnect notification */
>  	{ KE_KEY, 0xC4, { KEY_KBDILLUMUP } },
>  	{ KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } },
>  	{ KE_IGNORE, 0xC6, },  /* Ambient Light Sensor notification */