From: Almer S. Tigelaar Date: Sun, 12 Apr 2009 11:26:29 +0000 (+0000) Subject: ACPI: EC: Fix ACPI EC resume non-query interrupt message X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5aa63f038f042fd1acd6e720a95df72857db0bc7;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git 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 --- diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 04e90443eff7..391f331674c7 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; }