From 5aa63f038f042fd1acd6e720a95df72857db0bc7 Mon Sep 17 00:00:00 2001 From: "Almer S. Tigelaar" Date: Sun, 12 Apr 2009 11:26:29 +0000 Subject: [PATCH] ACPI: EC: Fix ACPI EC resume non-query interrupt message When resuming from standby (on a laptop) I see the following message in my kernel.log: "ACPI: EC: non-query interrupt received, switching to interrupt mode" This apparently prevented sony-laptop to properly restore the brightness level on resume. The cause: In drivers/acpi/ec.c the acpi_ec_suspend function clears the GPE mode bit, but this is not restored in acpi_ec_resume (the function below it). The patch below fixes this by properly restoring the GPE_MODE bit. Tested and confirmed to work. Signed-off-by: Almer S. Tigelaar Signed-off-by: Mattia Dongili Acked-by: Alexey Starikovskiy Signed-off-by: Len Brown --- drivers/acpi/ec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 04e90443eff..391f331674c 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -1065,6 +1065,7 @@ static int acpi_ec_resume(struct acpi_device *device) struct acpi_ec *ec = acpi_driver_data(device); /* Enable use of GPE back */ clear_bit(EC_FLAGS_NO_GPE, &ec->flags); + set_bit(EC_FLAGS_GPE_MODE, &ec->flags); acpi_enable_gpe(NULL, ec->gpe); return 0; } -- 2.20.1