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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D2F89C43381 for ; Wed, 27 Mar 2019 18:50:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5AD82082F for ; Wed, 27 Mar 2019 18:50:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553712605; bh=obaYy4YuILPpmU1jJhv6AtZkirhMgeoSyuWypcPsZL0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=DSjg2M7/pwC+sfxv11qeoUQK4jGcxk2j6rM8bUBicWRDQHXvydswufqppvckShecs sbJ3cjV3zayYsxOe1aXIUKODoAa5Jy92vm7YREZm8QY47R9CP75uU3cy4O1hyplxok Drwo28nzDfNb/WgKZo2YI6th4d2xTRZIqey7nYHw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390949AbfC0SuE (ORCPT ); Wed, 27 Mar 2019 14:50:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:35412 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389921AbfC0SS2 (ORCPT ); Wed, 27 Mar 2019 14:18:28 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 319EF2147C; Wed, 27 Mar 2019 18:18:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553710707; bh=obaYy4YuILPpmU1jJhv6AtZkirhMgeoSyuWypcPsZL0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Zfkkdbqfmh5ELrpVyJE5kNGH+S74tH6M1XZC69oiHytn8V/5mg1kWGjJRiVKsRrx2 JA8dpedbM6VNyzgwJnduHxuqTvSMV2maTq0YlYUOu4PhRujfE+FHzwUjIAB/FwDzAX K76FI7RMOVgd26H69nIkyzOsAaY3HJMshJErvo1I= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hans de Goede , "Rafael J . Wysocki" , Sasha Levin , linux-acpi@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 067/123] ACPI / video: Refactor and fix dmi_is_desktop() Date: Wed, 27 Mar 2019 14:15:31 -0400 Message-Id: <20190327181628.15899-67-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190327181628.15899-1-sashal@kernel.org> References: <20190327181628.15899-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hans de Goede [ Upstream commit cecf3e3e0803462335e25d083345682518097334 ] This commit refactors the chassis-type detection introduced by commit 53fa1f6e8a59 ("ACPI / video: Only default only_lcd to true on Win8-ready _desktops_") (where desktop means anything without a builtin screen). The DMI chassis_type is an unsigned integer, so rather then doing a whole bunch of string-compares on it, convert it to an int and feed the result to a switch case. Note the switch case uses hex values, this is done because the spec uses hex values too. This changes the check for "Main Server Chassis" from checking for 11 decimal to 11 hexadecimal, this is a bug fix, the original check for 11 decimal was wrong. Fixes: 53fa1f6e8a59 ("ACPI / video: Only default only_lcd to true ...") Signed-off-by: Hans de Goede [ rjw: Drop redundant return statements ] Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/acpi_video.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c index dbdd460a9958..9f56c066227c 100644 --- a/drivers/acpi/acpi_video.c +++ b/drivers/acpi/acpi_video.c @@ -2123,21 +2123,28 @@ static int __init intel_opregion_present(void) return opregion; } +/* Check if the chassis-type indicates there is no builtin LCD panel */ static bool dmi_is_desktop(void) { const char *chassis_type; + unsigned long type; chassis_type = dmi_get_system_info(DMI_CHASSIS_TYPE); if (!chassis_type) return false; - if (!strcmp(chassis_type, "3") || /* 3: Desktop */ - !strcmp(chassis_type, "4") || /* 4: Low Profile Desktop */ - !strcmp(chassis_type, "5") || /* 5: Pizza Box */ - !strcmp(chassis_type, "6") || /* 6: Mini Tower */ - !strcmp(chassis_type, "7") || /* 7: Tower */ - !strcmp(chassis_type, "11")) /* 11: Main Server Chassis */ + if (kstrtoul(chassis_type, 10, &type) != 0) + return false; + + switch (type) { + case 0x03: /* Desktop */ + case 0x04: /* Low Profile Desktop */ + case 0x05: /* Pizza Box */ + case 0x06: /* Mini Tower */ + case 0x07: /* Tower */ + case 0x11: /* Main Server Chassis */ return true; + } return false; } -- 2.19.1