From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753180AbeA0QWu (ORCPT ); Sat, 27 Jan 2018 11:22:50 -0500 Received: from mail-wm0-f68.google.com ([74.125.82.68]:54672 "EHLO mail-wm0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753152AbeA0QWo (ORCPT ); Sat, 27 Jan 2018 11:22:44 -0500 X-Google-Smtp-Source: AH8x225gDRuQkTMTRO4bR4jsy/7WpIZMVWJmHQlf1ML7HIq05L282FJlZhTN8udSR9C9JYzKhvZveg== From: =?UTF-8?q?Pali=20Roh=C3=A1r?= To: Jean Delvare , Guenter Roeck , Oleksandr Natalenko , Jonathan Buzzard , Mario Limonciello Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, =?UTF-8?q?Pali=20Roh=C3=A1r?= Subject: [PATCH 1/4] hwmon: (dell-smm) Enable broken functionality via "force" module param Date: Sat, 27 Jan 2018 17:22:01 +0100 Message-Id: <20180127162204.13752-2-pali.rohar@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180127162204.13752-1-pali.rohar@gmail.com> References: <20180127162204.13752-1-pali.rohar@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some Dell machines are broken and some functionality is disabled. Show warning into dmesg about this fact and allow user via "force" module param to override brokenness and enable broken functionality. Signed-off-by: Pali Rohár --- drivers/hwmon/dell-smm-hwmon.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index c7c9e95e58a8..aef4f8317ae2 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -1060,8 +1060,11 @@ static int __init i8k_probe(void) i8k_get_dmi_data(DMI_BIOS_VERSION)); } - if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) - disallow_fan_type_call = true; + if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) { + pr_warn("broken Dell BIOS detected, disallow fan type call\n"); + if (!force) + disallow_fan_type_call = true; + } strlcpy(bios_version, i8k_get_dmi_data(DMI_BIOS_VERSION), sizeof(bios_version)); -- 2.11.0