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

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Date: Tue, 23 Jan 2024 12:08:18 -0600
From: Mario Limonciello <mario.limonciello@....com>
To: 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>,
	"Mario Limonciello" <mario.limonciello@....com>, "Rafael J . Wysocki"
	<rafael@...nel.org>, Christian Heusel <christian@...sel.eu>
Subject: [PATCH] pinctrl: amd: Add IRQF_ONESHOT to the interrupt request

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")
Link: https://lore.kernel.org/linux-acpi/CAJZ5v0iRqUXeuKmC_+dAJtDBLWQ3x15n4gRH48y7MEaLoXF+UA@mail.gmail.com/T/#mc5506014141b61e472b24e095889535a04458083
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;
 
-- 
2.34.1