linux-kernel - Re: [PATCH 2/2] gpiolib: acpi: Add a quirk for Asus UM325UAZ

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Message-ID: <9c7c86da-9114-8d68-38f0-ec8284b79af0@redhat.com>
Date:   Wed, 27 Jul 2022 15:15:27 +0200
From:   Hans de Goede <hdegoede@...hat.com>
To:     Mario Limonciello <mario.limonciello@....com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Pavel Krc <reg.krn@...c.net>, linux-gpio@...r.kernel.org,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] gpiolib: acpi: Add a quirk for Asus UM325UAZ

Hi,

On 7/19/22 16:21, Mario Limonciello wrote:
> Asus UM325UAZ has GPIO 18 programmed as both an interrupt and a wake
> source, but confirmed with internal team on this design this pin is
> floating and shouldn't have been programmed. This causes lots of
> spurious IRQs on the system and horrendous battery life.
> 
> Add a quirk to ignore attempts to program this pin on this system.
> 
> Reported-and-tested-by: Pavel Krc <reg.krn@...c.net>
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=216208
> Signed-off-by: Mario Limonciello <mario.limonciello@....com>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@...hat.com>

Regards,

Hans


> ---
>  drivers/gpio/gpiolib-acpi.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
> index 375942d92d6f..2149713ea8f1 100644
> --- a/drivers/gpio/gpiolib-acpi.c
> +++ b/drivers/gpio/gpiolib-acpi.c
> @@ -1586,6 +1586,20 @@ static const struct dmi_system_id gpiolib_acpi_quirks[] __initconst = {
>  			.ignore_wake = "INT33FF:01@0",
>  		},
>  	},
> +	{
> +		/*
> +		 * Interrupt storm caused from edge triggered floating pin
> +		 * Found in BIOS UX325UAZ.300
> +		 * https://bugzilla.kernel.org/show_bug.cgi?id=216208
> +		 */
> +		.matches = {
> +			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
> +			DMI_MATCH(DMI_PRODUCT_NAME, "ZenBook UX325UAZ_UM325UAZ"),
> +		},
> +		.driver_data = &(struct acpi_gpiolib_dmi_quirk) {
> +			.ignore_interrupt = "AMDI0030:00@18",
> +		},
> +	},
>  	{} /* Terminating entry */
>  };
>