linux-kernel - Re: [PATCH] pinctrl: amd: Add IRQF_ONESHOT to the interrupt request

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Date: Fri, 26 Jan 2024 17:19:10 +0100
From: "Linux regression tracking (Thorsten Leemhuis)"
 <regressions@...mhuis.info>
To: Mario Limonciello <mario.limonciello@....com>,
 Linus Walleij <linus.walleij@...aro.org>
Cc: Basavaraj Natikar <Basavaraj.Natikar@....com>,
 Shyam Sundar S K <Shyam-sundar.S-k@....com>,
 "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
 "open list:PIN CONTROL SUBSYSTEM" <linux-gpio@...r.kernel.org>,
 open list <linux-kernel@...r.kernel.org>,
 "Rafael J . Wysocki" <rafael@...nel.org>,
 Christian Heusel <christian@...sel.eu>,
 Linux kernel regressions list <regressions@...ts.linux.dev>
Subject: Re: [PATCH] pinctrl: amd: Add IRQF_ONESHOT to the interrupt request

On 23.01.24 19:08, Mario Limonciello wrote:
> On some systems the interrupt is shared between GPIO controller
> and ACPI SCI. When the interrupt is shared with the ACPI SCI the
> flags need to be identical.
> 
> This should fix the GPIO controller failing to work after commit
> 7a36b901a6eb ("ACPI: OSL: Use a threaded interrupt handler for SCI").
> ```
> [    0.417335] genirq: Flags mismatch irq 9. 00000088 (pinctrl_amd) vs. 00002080 (acpi)
> [    0.420073] amd_gpio: probe of AMDI0030:00 failed with error -16
> ```
> 
> Cc: Rafael J. Wysocki <rafael@...nel.org>
> Reported-by: Christian Heusel <christian@...sel.eu>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218407
> Fixes: 7a36b901a6eb ("ACPI: OSL: Use a threaded interrupt handler for SCI")

I'm affected by this regression myself on my Thinkpad T14s Gen1 AMD
(power button does not work, but I guess there might be more). Haven't
tested this patch yet, seemed like this was pretty clear case and
Christian already tested it. But if it makes anyone happy I can do that.

> Link: https://lore.kernel.org/linux-acpi/CAJZ5v0iRqUXeuKmC_+dAJtDBLWQ3x15n4gRH48y7MEaLoXF+UA@mail.gmail.com/T/#mc5506014141b61e472b24e095889535a04458083

Side note: might be wise to change that to something slightly shorter:

Link:
https://lore.kernel.org/linux-acpi/kvoclxvyhmdmrfpfgwfjr33bdltej3upw5qcnazc4xakwdgg2b@krewjw2uk42k/

Ciao, Thorsten

> Signed-off-by: Mario Limonciello <mario.limonciello@....com>
> ---
>  drivers/pinctrl/pinctrl-amd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pinctrl/pinctrl-amd.c b/drivers/pinctrl/pinctrl-amd.c
> index ca4a247c2cd1..6a33b584976c 100644
> --- a/drivers/pinctrl/pinctrl-amd.c
> +++ b/drivers/pinctrl/pinctrl-amd.c
> @@ -1162,7 +1162,7 @@ static int amd_gpio_probe(struct platform_device *pdev)
>  	}
>  
>  	ret = devm_request_irq(&pdev->dev, gpio_dev->irq, amd_gpio_irq_handler,
> -			       IRQF_SHARED, KBUILD_MODNAME, gpio_dev);
> +			       IRQF_SHARED | IRQF_ONESHOT, KBUILD_MODNAME, gpio_dev);
>  	if (ret)
>  		goto out2;
>  

P.S.: Let me add this to the tracking while at it:

#regzbot introduced 7a36b901a6eb ^
https://bugzilla.kernel.org/show_bug.cgi?id=218407
#regzbot title ACPI: OSL:/pinctrl: GPIO controller failing to work
#regzbot fix pinctrl: amd: Add IRQF_ONESHOT to the interrupt request
#regzbot ignore-activity