Received: by 2002:a05:6358:11c7:b0:104:8066:f915 with SMTP id i7csp4879935rwl; Mon, 3 Apr 2023 10:54:22 -0700 (PDT) X-Google-Smtp-Source: AKy350a+JgpxkfMz7XluPrfhld6QGcuFCIkRKZGFNKaOsXT2h8Wc9RyZE7C9IN9fCfYHvhi/4jXP X-Received: by 2002:a17:906:fcc:b0:879:d438:4d1c with SMTP id c12-20020a1709060fcc00b00879d4384d1cmr39507180ejk.21.1680544462567; Mon, 03 Apr 2023 10:54:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1680544462; cv=none; d=google.com; s=arc-20160816; b=BrFextlMl2U2riTVf1M3hsutPxlETUqoh4Hsmv+EbZcogpufBbhfthbe6NpnDyY0cO QJWtewJHh9a9u3NvGKcl+vjjHocK1m59WSYrzucrs45vBGVvOMTXnT+AOzYXmd2jxzjv GpUSG2f2qDQGCGX9XOPUv9d41/CleHhvZhVEKdQfj4LxsxA8WmnUXw5jW07313D4JPsw GGUff5fU8Jup/dQW0IDRRVPIzYOq+TCf+CdYyJdi5ndWs5puyPto2wiH9jbF93KH3bNp 9BJr51DgANoPA2KLfy1aktK0nE/sTo8Q87bU5mwim3KtfWkGfCSSO6Ep2tteQQTg3P7A d0VA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from:dkim-signature; bh=pd9Jdz3B1SV91h6NLZvrdVDwNVrNDtan+IBMNGupTQk=; b=KgCC/B2/m1I+gMe/B1FUYNbsNHJDX07s7MCBqqoB/iv9ryGV5AukymzL2G4IcPi+Mp a8LDPCZ/YQzB3Ex55HKtE6Scd8fxNa7DUjDON5yCBK+hu0GUMbRdJZud9SVuvqTu+NL4 SYSd6Yujd6X8YsBHN+jqNAcreXssjR2VYDZduJkg8JJZkQCL9NxiaD/octrDlApBBW0q 5w6l/KZCPo1t+hrXxHk+FT/Jw2ieQQG2CaseP4X+/jxGpSnpqPIBytrYuACAediWmUIa eFkfBzEaQcJVI3STRVgWUlGTuyB2eHOZmPcMrTz/LtCHJxdzgZ2v+F2y7Dfi8yvbMuk5 vh6g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b="Nj/jSV5b"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id z9-20020a170906074900b008b593e8957esi8160068ejb.884.2023.04.03.10.53.57; Mon, 03 Apr 2023 10:54:22 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b="Nj/jSV5b"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232094AbjDCRxt (ORCPT + 99 others); Mon, 3 Apr 2023 13:53:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39610 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231877AbjDCRxr (ORCPT ); Mon, 3 Apr 2023 13:53:47 -0400 Received: from mail-yw1-x1134.google.com (mail-yw1-x1134.google.com [IPv6:2607:f8b0:4864:20::1134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5686B10CA for ; Mon, 3 Apr 2023 10:53:28 -0700 (PDT) Received: by mail-yw1-x1134.google.com with SMTP id 00721157ae682-545cb3c9898so491795017b3.7 for ; Mon, 03 Apr 2023 10:53:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1680544407; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=pd9Jdz3B1SV91h6NLZvrdVDwNVrNDtan+IBMNGupTQk=; b=Nj/jSV5bFvROgzKaoQxJbRMDMPB/iOtB0mLhe6Fa2/TjnB4hIQEMQtr9s0d/RtJciF nMX2IiNeVWbRtdG3aHvgRso36213IyjwzHVoray3wALsCs2d2KPljjcDxaysgvJ1bXJZ oMssqjXjwLs2jYDTzcphwKc8l0eGsujrnXVjEb4xqLif+8IfkU+fIzSa4tuZv3/oge66 ynZcEXjlNA6m2hk7EoBl+Bh2aJj7uD9omuK+onAxS07PdA1v5UOdH2WQ1CGA3Qa0ct+x zyBxAv2bAX182Zx947+M3FwLTjPFcYgK9HO2g3ZOHUHADHe310vEJ1rd+sU8Dq5ESjn9 PEsA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680544407; 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=pd9Jdz3B1SV91h6NLZvrdVDwNVrNDtan+IBMNGupTQk=; b=V/rGHTYdTjZGec+MioRNNxBGr+QQt1wiCkC7E2vmIH3lRfKgD0kgbG+id62vWvRkmf zp6vt9EH00rA/XF9vl8ubaBjjEarF0301yn3JTQoA1P6SlQF5DPa3QkC42G1N94tTYQ1 kYg6NgjqPfbcohhLX23LEODpm2DzY8yhlzCSgdcNpujwqDFmgn+tftzuMu/mGrwvsHM9 ZlCMcM4pDpM4ehgGwjdBRuHHR5F66xa6v97ooTJCTn0J93l/320eNgc4dJ/2zGCRG/GQ bprQzXYRYeB1gD/9YXf49DlLZlUkRNtDwz2yKDjVhmIGukJgjQQViUNIub8gaOP1Y/rr seyw== X-Gm-Message-State: AAQBX9cVeZC/SImt9G83zTFZZkubu864WEhxZlJ/ybrSWE54xwpxftL3 FSnA6Tb01ew2qsNLPE8S8L2rXu+hZuJrzxaygotaQg== X-Received: by 2002:a81:4b91:0:b0:538:47b2:c45c with SMTP id y139-20020a814b91000000b0053847b2c45cmr19235930ywa.8.1680544407337; Mon, 03 Apr 2023 10:53:27 -0700 (PDT) Received: from fedora.attlocal.net (69-109-179-158.lightspeed.dybhfl.sbcglobal.net. [69.109.179.158]) by smtp.gmail.com with ESMTPSA id z135-20020a814c8d000000b00545a08184adsm2661663ywa.61.2023.04.03.10.53.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Apr 2023 10:53:26 -0700 (PDT) From: William Breathitt Gray To: Linus Walleij , Bartosz Golaszewski Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, William Breathitt Gray Subject: [PATCH 0/2] Fix possible deadlocks for i8255 GPIO drivers Date: Mon, 3 Apr 2023 13:53:12 -0400 Message-Id: X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-0.2 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The 104-dio-48e and 104-idi-48 drivers leverage regmap-irq to handle IRQ. The default regmap locking utilizes spinlocks but this can result in deadlocks for IRQ chips when running -rt kernels [0]. Enable use_raw_spinlock for the regmap_config of these drivers to prevent such. [0] https://lore.kernel.org/all/1466065537-82027-1-git-send-email-mika.westerberg@linux.intel.com/ William Breathitt Gray (2): gpio: 104-dio-48e: Enable use_raw_spinlock for dio48e_regmap_config gpio: 104-idi-48: Enable use_raw_spinlock for idi48_regmap_config drivers/gpio/gpio-104-dio-48e.c | 1 + drivers/gpio/gpio-104-idi-48.c | 1 + 2 files changed, 2 insertions(+) base-commit: d49765b5f4320a402fbc4ed5edfd73d87640f27c -- 2.39.2