From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751522AbdJEOU0 (ORCPT ); Thu, 5 Oct 2017 10:20:26 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43702 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751323AbdJEOUY (ORCPT ); Thu, 5 Oct 2017 10:20:24 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com AD53D23D05 Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx03.extmail.prod.ext.phx2.redhat.com; spf=fail smtp.mailfrom=hdegoede@redhat.com From: Hans de Goede To: Darren Hart , Andy Shevchenko Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH] platform/x86: peaq-wmi: Add DMI check before binding to the WMI interface Date: Thu, 5 Oct 2017 16:20:21 +0200 Message-Id: <20171005142021.4899-1-hdegoede@redhat.com> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Thu, 05 Oct 2017 14:20:24 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It seems that the WMI GUID used by the PEAQ 2-in-1 WMI hotkeys is not as unique as a GUID should be and is used on some other devices too. This is causing spurious key-press reports on these other devices. This commits adds a DMI check to the PEAQ 2-in-1 WMI hotkeys driver to ensure that it is actually running on a PEAQ 2-in-1, fixing the spurious key-presses on these other devices. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1497861 BugLink: https://bugzilla.suse.com/attachment.cgi?id=743182 Cc: stable@vger.kernel.org Signed-off-by: Hans de Goede --- drivers/platform/x86/peaq-wmi.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/platform/x86/peaq-wmi.c b/drivers/platform/x86/peaq-wmi.c index bc98ef95514a..67fa3fa32011 100644 --- a/drivers/platform/x86/peaq-wmi.c +++ b/drivers/platform/x86/peaq-wmi.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -64,8 +65,22 @@ static void peaq_wmi_poll(struct input_polled_dev *dev) } } +/* Some other devices (Shuttle XS35) use the same WMI GUID for other purposes */ +static const struct dmi_system_id peaq_dmi_table[] = { + { + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "PEAQ"), + DMI_MATCH(DMI_PRODUCT_NAME, "PEAQ PMM C1010 MD99187"), + }, + }, +}; + static int __init peaq_wmi_init(void) { + /* WMI GUID is not unique, also check for a DMI match */ + if (!dmi_check_system(peaq_dmi_table)) + return -ENODEV; + if (!wmi_has_guid(PEAQ_DOLBY_BUTTON_GUID)) return -ENODEV; @@ -86,6 +101,9 @@ static int __init peaq_wmi_init(void) static void __exit peaq_wmi_exit(void) { + if (!dmi_check_system(peaq_dmi_table)) + return; + if (!wmi_has_guid(PEAQ_DOLBY_BUTTON_GUID)) return; -- 2.14.2