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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,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 9A71AC43461 for ; Wed, 12 May 2021 16:56:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6CD6661287 for ; Wed, 12 May 2021 16:56:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238887AbhELQ45 (ORCPT ); Wed, 12 May 2021 12:56:57 -0400 Received: from mail.kernel.org ([198.145.29.99]:35726 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244033AbhELQm2 (ORCPT ); Wed, 12 May 2021 12:42:28 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9E95861D09; Wed, 12 May 2021 16:09:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620835776; bh=2iSWQQGxERJ/C3azDaQUwxng3qS9n+6MqSRudrBUEPk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EiLvMQyEdMTgETYhwVuapy8TP1KOpUONZVx5HLq5RsQE7HQRCgdJT5flXvW70NBwF q2zcgaU0haPaK0IaJSUKgBTaJQ6QWekKOt0xAZeI77kip+sFYKy9RDgTALqTwNQCcm s/dia5pnD7eUDDaF3pvw10pPo29Y/R3xBQK1JAes= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jia Zhou , Yi Wang , Takashi Iwai , Sasha Levin Subject: [PATCH 5.12 479/677] ALSA: core: remove redundant spin_lock pair in snd_card_disconnect Date: Wed, 12 May 2021 16:48:45 +0200 Message-Id: <20210512144853.271637940@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144837.204217980@linuxfoundation.org> References: <20210512144837.204217980@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jia Zhou [ Upstream commit abc21649b3e5c34b143bf86f0c78e33d5815e250 ] modification in commit 2a3f7221acdd ("ALSA: core: Fix card races between register and disconnect") resulting in this problem. Fixes: 2a3f7221acdd ("ALSA: core: Fix card races between register and disconnect") Signed-off-by: Jia Zhou Signed-off-by: Yi Wang Link: https://lore.kernel.org/r/1616989007-34429-1-git-send-email-wang.yi59@zte.com.cn Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin --- sound/core/init.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/sound/core/init.c b/sound/core/init.c index 45f4b01de23f..ef41f5b3a240 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -398,10 +398,8 @@ int snd_card_disconnect(struct snd_card *card) return 0; } card->shutdown = 1; - spin_unlock(&card->files_lock); /* replace file->f_op with special dummy operations */ - spin_lock(&card->files_lock); list_for_each_entry(mfile, &card->files_list, list) { /* it's critical part, use endless loop */ /* we have no room to fail */ -- 2.30.2