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=-3.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 E5D43C433DF for ; Thu, 20 Aug 2020 18:03:54 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A1E7520758 for ; Thu, 20 Aug 2020 18:03:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ii3YrFGX"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="DYZz+mrq" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A1E7520758 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:References:In-Reply-To: Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=G4HSzfGiE25/rxPeHEW+x3JjWsxIjMnEjqgoSllHTuo=; b=ii3YrFGXDMqpId+l/1ti7TXs8 fLyNVEQgy5SzTKo62hQbgS1K33Vgwu/VXk3MMXJGRvWLM7Nnu6hu11y1j0MIUZVEeVhQcAbHWUnRh a8QG7s7molHIz6XV2ZBr+a1kgyH33XycEeAcg2818nobfeT1cpCjBaVSw9YIifQckeKdwT5vVl93s vg+Uv+zZTrGYMprQEBCGzq7QoDtMShC4ISwJKymK/kyQj9dHplxDb1wFBs92pnrNhwoIsQUEvWd3M e4v4prHHm7pfPXczLaGswx4Tr7I5esHLwyR9FjIrEOtQZFeOflaMh748B3VF3r6aweWAKDAtNQokR TR8ZVnYZw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k8otQ-0007Ld-R1; Thu, 20 Aug 2020 18:02:28 +0000 Received: from mail-pj1-x1041.google.com ([2607:f8b0:4864:20::1041]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k8otM-0007Je-Gd for linux-arm-kernel@lists.infradead.org; Thu, 20 Aug 2020 18:02:26 +0000 Received: by mail-pj1-x1041.google.com with SMTP id ep8so1319717pjb.3 for ; Thu, 20 Aug 2020 11:02:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:in-reply-to:references:date:message-id :mime-version; bh=QqW3ZsGK2Vs/RR3KVbYhMk1aAJty7ZnKrbqlbDUEVXU=; b=DYZz+mrqZ7MSwwwEC/P/B30GQTdLDWmqS66+3xGVqUQdNB9Vwt+tLMZdDnaP7Hum2P jz9AdwxBnubDPS//Zw0N500VNK1V7caEbYdN86N41lTS3M1leojzOqFSKoXHraPU6p1c BJub563jUTDyMordAnDbr0GR4WXkp7svGTtn10xQGOBhujuzF2QBqOqghFxKviFCRq9o MGloto/UQ0cPbU+YhW2YLkU6yjZRxQzgqlpiCeIIZR8Ed4FGrqQ2uw0IV/wcIcOgxdvU sDidvO/LPL0aeep08e22YUsHpK0sWneBLyYskLw7mAGytOV4B2AmMYKsNru4T2tmTBae RI8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version; bh=QqW3ZsGK2Vs/RR3KVbYhMk1aAJty7ZnKrbqlbDUEVXU=; b=K4r8smx5zY1fDPFGhLe4Q5cMMwGWUbO0Qw6G7494Lows3xjtEYJGnPcBd3YJvbZm5l OOfOwc+k8mMJroZBRJIGe9JrmjDQPzRvQZC+riS6QerTFQ10qLe/CRsiKEtyw5sOrpEq +P8+JpjrYl46xCEazEp/M+fNJsrxnPvAqEB6bWwx0STfE8DuhAKi0N3P1E4ofZoavPwg mqQ67hfOILt4Bd607wEkTOS7hmsbmlRgF3KOFgAUJB3QzxJ4minH/xam6CKG0wnzmLRN kAedVTuc1Ma2YWalgnreMKZXTBbew0JUsvt4wLacmDa5p8AiWcKPhKnwsOfGZn3nhniW NVCA== X-Gm-Message-State: AOAM531KJH/qpmxTftlnd5dlcjTVS/T7yWZ27gcMp+9FlSPShJxDjVuI qac7QSaKGmTwuHvE0n8h3RxHGA== X-Google-Smtp-Source: ABdhPJwjgdZb6hVrV+Y4kA9f4yun3yLoRLRq6sWbtlmTiMXLt2GSChf74IzohMLkL7PQlMjzerSfEg== X-Received: by 2002:a17:90b:3603:: with SMTP id ml3mr3307409pjb.207.1597946540821; Thu, 20 Aug 2020 11:02:20 -0700 (PDT) Received: from localhost (c-71-197-186-152.hsd1.wa.comcast.net. [71.197.186.152]) by smtp.gmail.com with ESMTPSA id w6sm3224669pgr.82.2020.08.20.11.02.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Aug 2020 11:02:19 -0700 (PDT) From: Kevin Hilman To: Jerome Brunet , Dan Robertson , Martin Blumenstingl , Neil Armstrong , Philipp Zabel Subject: Re: [PATCH 1/1] usb: dwc3: meson-g12a: fix shared reset control use In-Reply-To: <1jy2maekzf.fsf@starbuckisacylon.baylibre.com> References: <20200713160522.19345-1-dan@dlrobertson.com> <20200713160522.19345-2-dan@dlrobertson.com> <1jy2maekzf.fsf@starbuckisacylon.baylibre.com> Date: Thu, 20 Aug 2020 11:02:19 -0700 Message-ID: <7hpn7lci1g.fsf@baylibre.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200820_140224_570028_B915A138 X-CRM114-Status: GOOD ( 16.07 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-amlogic@lists.infradead.org, linux-usb@vger.kernel.org, aouledameur@baylibre.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Jerome Brunet writes: > On Mon 13 Jul 2020 at 18:05, Dan Robertson wrote: > >> The reset is a shared reset line, but reset_control_reset is still used >> and reset_control_deassert is not guaranteed to have been called before >> the first reset_control_assert call. When suspending the following >> warning may be seen: > > And now the same type of warning maybe seen on boot. This is > happening for me on the libretech-cc (s905x - gxl). > > [ 1.863469] ------------[ cut here ]------------ > [ 1.867914] WARNING: CPU: 1 PID: 16 at drivers/reset/core.c:309 reset_control_reset+0x130/0x150 > [ 1.876525] Modules linked in: > [ 1.879548] CPU: 1 PID: 16 Comm: kworker/1:0 Not tainted 5.9.0-rc1-00167-ga2e4e3a34775 #64 > [ 1.887737] Hardware name: Libre Computer AML-S905X-CC V2 (DT) > [ 1.893525] Workqueue: events deferred_probe_work_func > [ 1.898607] pstate: 80000005 (Nzcv daif -PAN -UAO BTYPE=--) > [ 1.904126] pc : reset_control_reset+0x130/0x150 > [ 1.908700] lr : phy_meson_gxl_usb2_init+0x24/0x70 > [ 1.913439] sp : ffff8000123ebad0 > [ 1.916717] x29: ffff8000123ebad0 x28: 0000000000000000 > [ 1.921978] x27: ffff00007c4b1ac8 x26: ffff00007c4b1ab0 > [ 1.927239] x25: ffff00007fc149b0 x24: ffff00007c4b1ab0 > [ 1.932500] x23: ffff00007cd03800 x22: ffff800011fb9000 > [ 1.937761] x21: ffff00007c60db08 x20: ffff00007c468a80 > [ 1.943023] x19: ffff00007c466b00 x18: ffffffffffffffff > [ 1.948284] x17: 0000000000000000 x16: 000000000000000e > [ 1.953545] x15: ffff800011fb9948 x14: ffffffffffffffff > [ 1.958806] x13: ffffffff00000000 x12: ffffffffffffffff > [ 1.964068] x11: 0000000000000020 x10: 7f7f7f7f7f7f7f7f > [ 1.969329] x9 : 78676f2c32617274 x8 : 0000000000000000 > [ 1.974590] x7 : ffffffffffffffff x6 : 0000000000000000 > [ 1.979851] x5 : 0000000000000000 x4 : 0000000000000000 > [ 1.985112] x3 : 0000000000000000 x2 : ffff8000107aa370 > [ 1.990374] x1 : 0000000000000001 x0 : 0000000000000001 > [ 1.995636] Call trace: > [ 1.998054] reset_control_reset+0x130/0x150 > [ 2.002279] phy_meson_gxl_usb2_init+0x24/0x70 > [ 2.006677] phy_init+0x78/0xd0 > [ 2.009784] dwc3_meson_g12a_probe+0x2c8/0x560 > [ 2.014182] platform_drv_probe+0x58/0xa8 > [ 2.018149] really_probe+0x114/0x3d8 > [ 2.021770] driver_probe_device+0x5c/0xb8 > [ 2.025824] __device_attach_driver+0x98/0xb8 > [ 2.030138] bus_for_each_drv+0x74/0xd8 > [ 2.033933] __device_attach+0xec/0x148 > [ 2.037726] device_initial_probe+0x24/0x30 > [ 2.041868] bus_probe_device+0x9c/0xa8 > [ 2.045663] deferred_probe_work_func+0x7c/0xb8 > [ 2.050150] process_one_work+0x1f0/0x4b0 > [ 2.054115] worker_thread+0x210/0x480 > [ 2.057824] kthread+0x158/0x160 > [ 2.061017] ret_from_fork+0x10/0x18 > [ 2.064550] ---[ end trace 94d737efe593c6f6 ]--- > [ 2.069158] phy phy-d0078000.phy.0: phy init failed --> -22 > [ 2.074858] dwc3-meson-g12a: probe of d0078080.usb failed with error -22 > > This breaks USB on this device. reverting the change brings it back. [...] > In the meantime, I think this change should be reverted. A warning on > suspend seems less critical than a regression breaking USB completly. Fully agree. Phillip, can you please revert this patch until the right solution is found? Boot failure is much worse than a suspend warning. Kevin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel