diff mbox series

ACPI/button: reinitialize button state upon resume

Message ID 1554212312-6154-1-git-send-email-rui.zhang@intel.com (mailing list archive)
State Accepted, archived
Delegated to: Rafael Wysocki
Headers show
Series ACPI/button: reinitialize button state upon resume | expand

Commit Message

Zhang, Rui April 2, 2019, 1:38 p.m. UTC
With commit dfa46c50f65b ("ACPI / button: Fix an issue in
button.lid_init_state=ignore mode"), the lid device is considered to be
not compliant to SW_LID if the Lid state is unchanged when updating it.

This is not wrong, but we overlooked the resume case, where Lid state is
updated unconditionally in the button driver .resume() callback. And this
results in warning message "ACPI: button: The lid device is not compliant
to  SW_LID." after resume, if the machine is suspended with Lid opened and
then resumed with Lid opened.

Fix this by flushing the cached lid state before updating the Lid device
in .resume() callback.

Fixes: dfa46c50f65b ("ACPI / button: Fix an issue in button.lid_init_state=ignore mode")
Reported-and-tested-by: Zhao Lijian <lijian.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
---
 drivers/acpi/button.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index a19ff39..623998a 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -456,8 +456,11 @@  static int acpi_button_resume(struct device *dev)
 	struct acpi_button *button = acpi_driver_data(device);
 
 	button->suspended = false;
-	if (button->type == ACPI_BUTTON_TYPE_LID && button->input->users)
+	if (button->type == ACPI_BUTTON_TYPE_LID && button->input->users) {
+		button->last_state = !!acpi_lid_evaluate_state(device);
+		button->last_time = ktime_get();
 		acpi_lid_initialize_state(device);
+	}
 	return 0;
 }
 #endif