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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 B0AE4C433DF for ; Fri, 19 Jun 2020 16:11:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8362521527 for ; Fri, 19 Jun 2020 16:11:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592583075; bh=Aay7g+6QoqcAa867zA6NxerJV2IzWmFYYUuikQsOEp4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=nSY6Z9KYjNwE9TxIdlFVmiL/FHFhYaXxQivOqDxkOwvrLqdnyhwCzPFxxoFa93Eqb GCeml/DkhstmSsyMhWOLtoRKwx/LGJhWLPxpL9Pd8s2UMpPx3R9HpIsbTJztlGOnfu x2/BSKObTeo7eiIdQe/7bDGUe2WxylvT1QB+HXuo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394343AbgFSQLN (ORCPT ); Fri, 19 Jun 2020 12:11:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:35142 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389003AbgFSPGH (ORCPT ); Fri, 19 Jun 2020 11:06:07 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 608FD21852; Fri, 19 Jun 2020 15:06:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592579167; bh=Aay7g+6QoqcAa867zA6NxerJV2IzWmFYYUuikQsOEp4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZMfujynhnOtjC6DaT+FGJb09taWrw1sLY4oabdVqgPBVsepgE7U0xNC8ujfyF/O5M hVQp6BJCThz62Wq48Gsoy/5qomiqVs3fWWg5TOrdCBPItzLAhTqX6Keipc6UForjRa 91SO7xhTFXpEQGZBI3synVKu2cjYv0B96iJbLdrk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Koba Ko , Mario Limonciello , =?UTF-8?q?Pali=20Roh=C3=A1r?= , Andy Shevchenko , Sasha Levin Subject: [PATCH 5.4 033/261] platform/x86: dell-laptop: dont register micmute LED if there is no token Date: Fri, 19 Jun 2020 16:30:44 +0200 Message-Id: <20200619141651.497700068@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200619141649.878808811@linuxfoundation.org> References: <20200619141649.878808811@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Koba Ko [ Upstream commit 257e03a334ccb96e657bf5f6ab3b5693a22c2aa4 ] On Dell G3-3590, error message is issued during boot up, "platform::micmute: Setting an LED's brightness failed (-19)", but there's no micmute led on the machine. Get the related tokens of SMBIOS, GLOBAL_MIC_MUTE_DISABLE/ENABLE. If one of two tokens doesn't exist, don't call led_classdev_register() for platform::micmute. After that, you wouldn't see the platform::micmute in /sys/class/leds/, and the error message wouldn't see in dmesg. Fixes: d00fa46e0a2c6 ("platform/x86: dell-laptop: Add micmute LED trigger support") Signed-off-by: Koba Ko Reviewed-by: Mario Limonciello Reviewed-by: Pali Rohár Signed-off-by: Andy Shevchenko Signed-off-by: Sasha Levin --- drivers/platform/x86/dell-laptop.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index 74e988f839e8..4c1dd1d4e60b 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -2204,10 +2204,13 @@ static int __init dell_init(void) dell_laptop_register_notifier(&dell_laptop_notifier); - micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE); - ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev); - if (ret < 0) - goto fail_led; + if (dell_smbios_find_token(GLOBAL_MIC_MUTE_DISABLE) && + dell_smbios_find_token(GLOBAL_MIC_MUTE_ENABLE)) { + micmute_led_cdev.brightness = ledtrig_audio_get(LED_AUDIO_MICMUTE); + ret = led_classdev_register(&platform_device->dev, &micmute_led_cdev); + if (ret < 0) + goto fail_led; + } if (acpi_video_get_backlight_type() != acpi_backlight_vendor) return 0; -- 2.25.1