From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E5D3C77B73 for ; Mon, 8 May 2023 10:16:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234320AbjEHKQX (ORCPT ); Mon, 8 May 2023 06:16:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234319AbjEHKQW (ORCPT ); Mon, 8 May 2023 06:16:22 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9ADF93ACC1 for ; Mon, 8 May 2023 03:16:20 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 302B5624A3 for ; Mon, 8 May 2023 10:16:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41D5BC433D2; Mon, 8 May 2023 10:16:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683540979; bh=qOvvJq924e06I7uIyJbU8v/xPMYZ86zr0saVYma7EO8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M/mBL5oWiBFe18eVsSzy8paLwikWUksCqjIFSbkR/UKqYKk8I1GTIbEps26dUGExi MSwiBsuT0Wgnr/9olmcEUnf/uTKn/R1mroTkmAoezQyIq/GuuQZHkrpi5nrVh9ItAc eFVjqyRa4g1T3vlWPbDETogs/YbMwqrk06hZMM3E= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?G=C3=A9=20Koerkamp?= , Hans de Goede , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 6.1 553/611] ACPI: PM: Do not turn of unused power resources on the Toshiba Click Mini Date: Mon, 8 May 2023 11:46:35 +0200 Message-Id: <20230508094439.972753037@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094421.513073170@linuxfoundation.org> References: <20230508094421.513073170@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Hans de Goede [ Upstream commit 9b04d99788cf475cbd277f30ec66230ccb7e99f4 ] The CPR3 power resource on the Toshiba Click Mini toggles a GPIO which is called SISP (for SIS touchscreen power?) on/off. This CPR3 power resource is not listed in any _PR? lists, let alone in a _PR0 list for the SIS0817 touchscreen ACPI device which needs it. Before commit a1224f34d72a ("ACPI: PM: Check states of power resources during initialization") this was not an issue because since nothing referenced the CPR3 power resource its state was always ACPI_POWER_RESOURCE_STATE_UNKNOWN and power resources with this state get ignored by acpi_turn_off_unused_power_resources(). This clearly is a bug in the DSDT of this device. Add a DMI quirk to make acpi_turn_off_unused_power_resources() a no-op on this model to fix the touchscreen no longer working since kernel 5.16 . This quirk also causes 2 other power resources to not get turned off, but the _OFF method on these already was a no-op, so this makes no difference for the other 2 power resources. Fixes: a1224f34d72a ("ACPI: PM: Check states of power resources during initialization") Reported-by: Gé Koerkamp Link: https://bugzilla.kernel.org/show_bug.cgi?id=216946 Link: https://lore.kernel.org/regressions/32a14a8a-9795-4c8c-7e00-da9012f548f8@leemhuis.info/ Signed-off-by: Hans de Goede Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/power.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index f2588aba8421e..aea8c994caeac 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -23,6 +23,7 @@ #define pr_fmt(fmt) "ACPI: PM: " fmt +#include #include #include #include @@ -1022,6 +1023,21 @@ void acpi_resume_power_resources(void) } #endif +static const struct dmi_system_id dmi_leave_unused_power_resources_on[] = { + { + /* + * The Toshiba Click Mini has a CPR3 power-resource which must + * be on for the touchscreen to work, but which is not in any + * _PR? lists. The other 2 affected power-resources are no-ops. + */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"), + DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE Click Mini L9W-B"), + }, + }, + {} +}; + /** * acpi_turn_off_unused_power_resources - Turn off power resources not in use. */ @@ -1029,6 +1045,9 @@ void acpi_turn_off_unused_power_resources(void) { struct acpi_power_resource *resource; + if (dmi_check_system(dmi_leave_unused_power_resources_on)) + return; + mutex_lock(&power_resource_list_lock); list_for_each_entry_reverse(resource, &acpi_power_resource_list, list_node) { -- 2.39.2