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[2620:137:e000::3:6]) by mx.google.com with ESMTPS id 199-20020a6301d0000000b0057745d87b53si1271152pgb.686.2023.12.08.02.20.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Dec 2023 02:20:34 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:6 as permitted sender) client-ip=2620:137:e000::3:6; Authentication-Results: mx.google.com; dkim=pass header.i=@bgdev-pl.20230601.gappssmtp.com header.s=20230601 header.b=DQtsWe5G; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:6 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by pete.vger.email (Postfix) with ESMTP id E136F82A9BBA; Fri, 8 Dec 2023 02:20:30 -0800 (PST) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.11 at pete.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1573453AbjLHKUV (ORCPT + 99 others); Fri, 8 Dec 2023 05:20:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42196 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230506AbjLHKUU (ORCPT ); Fri, 8 Dec 2023 05:20:20 -0500 Received: from mail-wr1-x431.google.com (mail-wr1-x431.google.com [IPv6:2a00:1450:4864:20::431]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07ECA1708 for ; Fri, 8 Dec 2023 02:20:26 -0800 (PST) Received: by mail-wr1-x431.google.com with SMTP id ffacd0b85a97d-3332e351670so1773000f8f.0 for ; Fri, 08 Dec 2023 02:20:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1702030824; x=1702635624; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=LI2cPVtpfspTOTHLatTsMeq1yG49Tg1pPBonSn3WXmM=; b=DQtsWe5GEiwk/RGOgQYa3ghTQuUTZMxpZU4aeKBhZ6SbyDqyqHeuhICCiw4jh9zzuu Bss6YXFC0jeH8X8ubeH4y7FUlxgzaMIeV+kJBus3T1t9MUf3nwalqlb/n4eQArBFQC1u CT+dgvRUCo4AJj9btZNMTmBi99BXgtma7c6D/mQzDdR3H3H6H1fK16wmdhxVDK3mEmia PwbueeesmwpnQWmELFQm5sNL+Hp8VNYPPQ8lcyZ3vIA9k1CXuJSFQoIT03Goo2tfWe1j JIdFZ/xqf7Qgj1u/emIY9JOq9eJoox/nxQkJhLW5RmrvYVPyMk2SJu7l/fi4OFXzk9bN Mfaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702030824; x=1702635624; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=LI2cPVtpfspTOTHLatTsMeq1yG49Tg1pPBonSn3WXmM=; b=Pzwo63goZnRJ0YTREaQgK32QrxIJTqz9KeYibDAzkpWspdpCXI5NTdov8cp/cNDTSi XeIB7mCCq8rH7ONkBoLBGIlKsznEOCBV7TGkdddU7vSnPABTOeJ/Fz7aoHbJM3XcQ5Zb BWbv0GEEXTyFrDLoN/94menWf78Oc370pDJBor/W996kX/njqIua7u6xmOR9ET8aXTX6 dMkzjYuWs30+kUhZpo5WKZKK47apptpGlMM4ahiZ38cB5HMHrzMOUQQGP3DkQ7yjrB2b 2/RLb/h1m446686ZSxc7Wjlz4KgegSyvf2XSZs5taODxuhag42bU93kxp3nDlAidPqYh scRA== X-Gm-Message-State: AOJu0YxR1kxmgc9/0PELeby1J2V+xi0gCadcMcGL7UyX+b1dSJDOmRkX wWgnLXEVUIGvffDDj6ERyVvodw== X-Received: by 2002:a5d:4145:0:b0:334:bc62:4b32 with SMTP id c5-20020a5d4145000000b00334bc624b32mr608180wrq.224.1702030824459; Fri, 08 Dec 2023 02:20:24 -0800 (PST) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:b162:2510:4488:c0c3]) by smtp.gmail.com with ESMTPSA id n16-20020a5d4850000000b003334926fb81sm1678026wrs.90.2023.12.08.02.20.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 08 Dec 2023 02:20:23 -0800 (PST) From: Bartosz Golaszewski To: Linus Walleij , Andy Shevchenko , Kent Gibson Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v2 0/2] gpiolib: protect the list of GPIO devices with a mutex Date: Fri, 8 Dec 2023 11:20:18 +0100 Message-Id: <20231208102020.36390-1-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 MIME-Version: 1.0 X-Spam-Status: No, score=-0.8 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pete.vger.email Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (pete.vger.email [0.0.0.0]); Fri, 08 Dec 2023 02:20:31 -0800 (PST) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1784708684750810058 X-GMAIL-MSGID: 1784708684750810058 From: Bartosz Golaszewski I figured that - since the descriptor locking is going to take some more time - we should at least start the conversion and protect the GPIO device list with a mutex. Patch 2/2 here is actually a v2 of the original submission. v1 -> v2: - add a patch renaming two functions - protect the list in gpio_device_find() too - coding style tweaks Bartosz Golaszewski (2): gpiolib: rename static functions that are called with the lock taken gpiolib: use a mutex to protect the list of GPIO devices drivers/gpio/gpiolib-sysfs.c | 26 +----- drivers/gpio/gpiolib-sysfs.h | 6 ++ drivers/gpio/gpiolib.c | 166 ++++++++++++++++++----------------- drivers/gpio/gpiolib.h | 1 - 4 files changed, 94 insertions(+), 105 deletions(-)