Received: by 2002:a05:6a10:eb17:0:0:0:0 with SMTP id hx23csp196198pxb; Thu, 2 Sep 2021 23:27:50 -0700 (PDT) X-Google-Smtp-Source: ABdhPJw5+tWTgSqDwG1OTD9SUe+XiLzmttWerCXPSXERheAuuAWtdJrLVH0JG9GildOTI2I2R7G+ X-Received: by 2002:a02:294b:: with SMTP id p72mr1403815jap.0.1630650470064; Thu, 02 Sep 2021 23:27:50 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1630650470; cv=none; d=google.com; s=arc-20160816; b=On6obX3T4KtQETZjhavqwE0YMjhy6pXZEAu1XAGm+QBl+N9kEI9uzhOTUycIi1oSkP mSVqLbfpgVMbtQ0osL2GduhPXgE3ySUBzfs/3zi7Kp/rxKgnUfUUDTFU5NXYjFameHK/ ez/nsVsik9MFmAgKvOw4lIEK4lJKSH+OhH+bwVMVtAXKmzkOSJKVowZworPk6/kmnJPm aIyzlR/9oA9X6JFCcNCSLVXStpsHzLZbqjvsSmbd8a8k0n7QdtQRLkG6cMELNbhp+EPg HDrNFoQCnVrFmXzuH0J1S2rHjvjK6TEXxo4lILgl37wY4PWVYXgR8mUUrrXOyjdfBpqw Zmaw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-language:thread-index :content-transfer-encoding:mime-version:message-id:date:subject :in-reply-to:references:cc:to:from; bh=0fTMRIeL2LpxdxahITjVc8YdObd5qFd32XNbZjwO8Ms=; b=iEYxktgKJTF2m8hm9Dr2n3aMYs/SMCfTQIQ/qubiv9ESp0HRhfUZngd+zhKMWbtKbP 7rJ1I3SOYubwCjI/jYo4+Hws1c5lHBjYviK6u/ehsBjAzEIrihEna/tinbm9AbHjt4qC OHJ1AOEoHQ9/n/3qT/cZ8hH5t2Gq+S/g+aPEw3ZrpUjf+gGfBlPBOwoS2z/fv6snvWGp Nwcf5zh5OMB+6BAp23ssKOYq9v//A6LfIPWkxFHw7xoQu8C1PA3Ii75uaNhwnxAWWqMZ wrI11tVXxkGqBEq0g1kKAY5/8RCyRGbBPV41XphfsKIh+sYUr5t7NGlJ1WCHASb47qD4 7K1g== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id e16si4757214ilm.91.2021.09.02.23.27.38; Thu, 02 Sep 2021 23:27:50 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236332AbhICGZW (ORCPT + 99 others); Fri, 3 Sep 2021 02:25:22 -0400 Received: from smtp3.hiworks.co.kr ([121.254.168.205]:18477 "EHLO smtp3.hiworks.co.kr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230128AbhICGZU (ORCPT ); Fri, 3 Sep 2021 02:25:20 -0400 Received: (qmail 120186 invoked from network); 3 Sep 2021 15:17:39 +0900 Received: from unknown (HELO hiworks.co.kr) (192.168.10.161) by 0 (qmail 1.03 + ejcp v14) with SMTP; 3 Sep 2021 15:17:39 +0900 Received: (qmail 18377 invoked from network); 3 Sep 2021 15:17:39 +0900 Received: from unknown (HELO DESKTOP3HTLQGF) (tykwon@m2i.co.kr@58.75.176.98) by 0 (qmail 1.03 + ejcp v14) with SMTP; 3 Sep 2021 15:17:39 +0900 X-Authinfo: HIWORKS SMTP authenticated From: =?UTF-8?B?6raM7YOc7JiB?= To: "'Ulf Hansson'" Cc: "'linux-mmc'" , "'Linux Kernel Mailing List'" References: <20210624061418.30361-1-tykwon@m2i.co.kr> In-Reply-To: Subject: RE: [PATCH] mmc: core: Added support for LED trigger only when SD card is connected Date: Fri, 3 Sep 2021 15:17:40 +0900 Message-ID: <111301d7a08b$66710460$33530d20$@m2i.co.kr> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQM/ouEl57R0GPXs7J4RkiPdEOUrjgFbgzw3qEjedVCAbhYg0A== Content-Language: ko Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I'm guessing it's because of the NULL in the mmc_sd_remove() function in > drivers/mmc/core/sd.c , but I'm not sure. > I think it was clumsy because I was a newbie unfamiliar with mmc > drivers. :) I'll take a closer look. This was a hardware issue. The CD pins on my hardware kept vibrating. :)