From d30283057ecdf8c543ae757ae34db3d7fd2d7732 Mon Sep 17 00:00:00 2001 From: Lv Zheng Date: Wed, 3 Aug 2016 16:01:50 +0800 Subject: [PATCH] ACPI / EC: Enable event freeze mode to improve event handling for suspend process This patch enables the event freeze mode, flushing the EC event handling in .suspend() callback. This feature is experimental, if it is bisected out to be the cause of the real issues, please report the issues to the kernel bugzilla for further root causing and improvement. This mode eliminates useless _Qxx handling during the power saving operations, thus can help to tune the power saving operations faster. Tests show that this mode can efficiently block flooding _Qxx during the suspend process and tune the speed of the suspend faster. Signed-off-by: Lv Zheng Tested-by: Todd E Brandt Signed-off-by: Rafael J. Wysocki --- drivers/acpi/ec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 2bec709eb4e5..1925589ecf66 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -146,7 +146,7 @@ static unsigned int ec_storm_threshold __read_mostly = 8; module_param(ec_storm_threshold, uint, 0644); MODULE_PARM_DESC(ec_storm_threshold, "Maxim false GPE numbers not considered as GPE storm"); -static bool ec_freeze_events __read_mostly = false; +static bool ec_freeze_events __read_mostly = true; module_param(ec_freeze_events, bool, 0644); MODULE_PARM_DESC(ec_freeze_events, "Disabling event handling during suspend/resume"); -- 2.20.1