[PATCH 5.10 043/406] platform/x86: huawei-wmi: Silence ambient light sensor

Greg Kroah-Hartman
2023-09-17T19:19:22Z

From: Konstantin Shelekhin <k.shelekhin@ftml.net>

[ Upstream commit c21733754cd6ecbca346f2adf9b17d4cfa50504f ]

Currently huawei-wmi causes a lot of spam in dmesg on my
Huawei MateBook X Pro 2022:

...
[36409.328463] input input9: Unknown key pressed, code: 0x02c1
[36411.335104] input input9: Unknown key pressed, code: 0x02c1
[36412.338674] input input9: Unknown key pressed, code: 0x02c1
[36414.848564] input input9: Unknown key pressed, code: 0x02c1
[36416.858706] input input9: Unknown key pressed, code: 0x02c1
...

Fix that by ignoring events generated by ambient light sensor.

This issue was reported on GitHub and resolved with the following merge
request:

https://github.com/aymanbagabas/Huawei-WMI/pull/70

I've contacted the mainter of this repo and he gave me the "go ahead" to
send this patch to the maling list.

Signed-off-by: Konstantin Shelekhin <k.shelekhin@ftml.net>
Link: https://lore.kernel.org/r/20230722155922.173856-1-k.shelekhin@ftml.net
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/platform/x86/huawei-wmi.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/platform/x86/huawei-wmi.c b/drivers/platform/x86/huawei-wmi.c
index 935562c870c3d..23ebd0c046e16 100644
--- a/drivers/platform/x86/huawei-wmi.c
+++ b/drivers/platform/x86/huawei-wmi.c
@@ -86,6 +86,8 @@ static const struct key_entry huawei_wmi_keymap[] = {
{ KE_IGNORE, 0x293, { KEY_KBDILLUMTOGGLE } },
{ KE_IGNORE, 0x294, { KEY_KBDILLUMUP } },
{ KE_IGNORE, 0x295, { KEY_KBDILLUMUP } },
+ // Ignore Ambient Light Sensoring
+ { KE_KEY, 0x2c1, { KEY_RESERVED } },
{ KE_END, 0 }
};

--
2.40.1