gpiolib-acpi: Don't set GPIOs for wakeup in S3 mode

[ Upstream commit d63f11c02b8d3e54bdb65d8c309f73b7f474aec4 ]

commit 1796f808e4bb ("HID: i2c-hid: acpi: Stop setting wakeup_capable")
adjusted the policy to enable wakeup by default if the ACPI tables
indicated that a device was wake capable.

It was reported however that this broke suspend on at least two System76
systems in S3 mode and two Lenovo Gen2a systems, but only with S3.
When the machines are set to s2idle, wakeup behaves properly.

Configuring the GPIOs for wakeup with S3 doesn't work properly, so only
set it when the system supports low power idle.

Fixes: 1796f808e4bb ("HID: i2c-hid: acpi: Stop setting wakeup_capable")
Fixes: b38f2d5d9615c ("i2c: acpi: Use ACPI wake capability bit to set wake_irq")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2357
Link: https://bugzilla.redhat.com/show_bug.cgi?id=2162013
Reported-by: Nathan Smythe <ncsmythe@scruboak.org>
Tested-by: Nathan Smythe <ncsmythe@scruboak.org>
Suggested-by: Raul Rangel <rrangel@chromium.org>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index e2ab4d5..fa3de3c 100644 (file)
--- a/drivers/gpio/gpiolib-acpi.c
+++ b/drivers/gpio/gpiolib-acpi.c
@@ -1080,7 +1080,8 @@ int acpi_dev_gpio_irq_wake_get_by(struct acpi_device *adev, const char *name, in
                                dev_dbg(&adev->dev, "IRQ %d already in use\n", irq);
                        }
 
-                       if (wake_capable)
+                       /* avoid suspend issues with GPIOs when systems are using S3 */
+                       if (wake_capable && acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)
                                *wake_capable = info.wake_capable;
 
                        return irq;