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

Origin: https://git.kernel.org/linus/d63f11c02b8d3e54bdb65d8c309f73b7f474aec4
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2357
Bug-Debian: https://bugs.debian.org/1029046

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>
Gbp-Pq: Topic bugfix/all
Gbp-Pq: Name gpiolib-acpi-Don-t-set-GPIOs-for-wakeup-in-S3-mode.patch

diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c
index a7d2358736fe761bfdd08bc30f9c8b611f80fdb2..5940e9cc04fea6564a7bb589e9424b29300284bf 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;