Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753209AbdGYUYK (ORCPT ); Tue, 25 Jul 2017 16:24:10 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:34464 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752004AbdGYTVv (ORCPT ); Tue, 25 Jul 2017 15:21:51 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Damjan Georgievski , Lv Zheng , "Rafael J. Wysocki" Subject: [PATCH 4.9 084/125] Revert "ACPI / EC: Enable event freeze mode..." to fix a regression Date: Tue, 25 Jul 2017 12:19:59 -0700 Message-Id: <20170725192018.908047695@linuxfoundation.org> X-Mailer: git-send-email 2.13.3 In-Reply-To: <20170725192014.314851996@linuxfoundation.org> References: <20170725192014.314851996@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1535 Lines: 40 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lv Zheng commit 9c40f956ce9b331493347d1b3cb7e384f7dc0581 upstream. On Lenovo ThinkPad X1 Carbon - the 5th Generation, enabling an earlier EC event freezing timing causes acpitz-virtual-0 to report a stuck 48C temparature. And with EC firmware revisioned as 1.14, without reverting back to old EC event freezing timing, the fan still blows up after a system resume. This reverts the culprit change so that the regression can be fixed without upgrading the EC firmware. Fixes: d30283057ecd (ACPI / EC: Enable event freeze mode to improve event handling) Link: https://bugzilla.kernel.org/show_bug.cgi?id=191181#c168 Tested-by: Damjan Georgievski Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/acpi/ec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -147,7 +147,7 @@ static unsigned int ec_storm_threshold 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 = true; +static bool ec_freeze_events __read_mostly = false; module_param(ec_freeze_events, bool, 0644); MODULE_PARM_DESC(ec_freeze_events, "Disabling event handling during suspend/resume");