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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 721F4C43458 for ; Tue, 30 Jun 2026 14:04:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=FqA6iRD3qeD4wMSsP+OhJR3CzOzpUF2CYQIpGTl5XSw=; b=MnycJf+LtpYABj Cc/BQrkjb3JPP1L6RODDhRFPTVNV0u1ajNSX/2Fi67KcvLmy2dmJTSW9RDeLadyxVImCcb1oV/JrP udW4p3zqCJV60DYmE2+WlfdK8b6x3Rt7D8Gccx5MywhZUQhjcyKwoVt6cTSGpDSCTq7+6Y2t6jDmn F/yQK6DbFY25BAXw+Q6dQqlSBn8bL5H2fbOnYYAb/wJ8kjaUEYfaJmVYBmkJUTQo6Cns3OVX0eCsV mbGukAA6VUGKDRm5IFOxAVkT2uPYLc1ftbs3+Lo8qGIiNsSlFwylUbfb2DQ6AwY+7NapPXgHsiiuh wWfhqBwuwbJqjf9yF/sw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1weZ4K-0000000HFCg-3B83; Tue, 30 Jun 2026 14:04:08 +0000 Received: from mx0b-0031df01.pphosted.com ([205.220.180.131]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1weZ4E-0000000HF7a-05sd for linux-amlogic@lists.infradead.org; Tue, 30 Jun 2026 14:04:05 +0000 Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 65U9mtXp1522264 for ; Tue, 30 Jun 2026 14:04:00 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= LGt/jVunNdiuTF9CeeIY4kTWF7I8j+mwn+w7wJk+cOo=; b=FGvGLwrYQwb0wTLS Z7JvOlsgO0GP294YGQUWXMPOV9SQTnVhfYHluhNk0Wwz718qWtwD+LbPR3RIaO2Z /DrgzXqnZykuY5S8OWJFpE69CkxQq7SgXnWGaACmV4WHiQPuy0KG5aWs89ijZem8 qvDbZOAPwmAZGRnS1frDotFS5V8JnSKUJzbQWMTXJCV64YeK11g7mm5Xm8e/B2ST j9mcDfqKR9Q7dlUe0BEM73bHP5yaxw6+2JniS8nDIi7cBbi0tYSLhBjtWqMZ0urO /cgqY4TTo88BLrAlPrSt/fpatRnNfo7TJyxpFYHsSUFoPWdZ0omiRALqpBQuhG7a TZny1g== Received: from mail-pj1-f69.google.com (mail-pj1-f69.google.com [209.85.216.69]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4f3yw93r1n-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Tue, 30 Jun 2026 14:04:00 +0000 (GMT) Received: by mail-pj1-f69.google.com with SMTP id 98e67ed59e1d1-37fc13e814eso1927385a91.2 for ; Tue, 30 Jun 2026 07:03:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1782828239; x=1783433039; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=LGt/jVunNdiuTF9CeeIY4kTWF7I8j+mwn+w7wJk+cOo=; b=HuKJnJxXaVDZyA+1e/bEVrjnqmX/To/Ref2sDGhL85yGlC+dEXgr94dXCNVRxhscEv jdwwK7TNsbJzD/8kWO3rTse29twcVIo9zgUdiYJtUM1v+ar35sJLccko/kIvUstLWIv5 z+UWcE3fspCiBy8/ImJgLHpnbHT2+YoQOAbalDrCTsI8OY5by/Tp32PMLOrlIY70y1A8 e6NmlH2v/mxA/qxyDSQTg2JahRVo0lf0JuJtv7mNBHo0ewzjlpdPColgXCAJoW0nBTFl mSesbJKXxKZOyczoT2ERsa9RBkGc/for9DPHETrzF4IO1oiC7IhW0NaiqcDo61W0Qy/t Ppyw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782828239; x=1783433039; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=LGt/jVunNdiuTF9CeeIY4kTWF7I8j+mwn+w7wJk+cOo=; b=DgU928YY3na1/P001llGFMtYi48egc5T+U2q9Ow7Zoy83EeplMETow5iR8kB5eELVm 4R6WTn3gBqdSCSqY0A/0G4a52YoztOlEyAOiGdhc4K1oE76l5WjclNPQOHyPhj4tBpE3 nf9QG6qDJkGfs4xGoDGAdg1chKtPZOWp7yQaYkAXBETVkHOvT6TF1J0aV3sFpwTVZVPZ JJWu8GIFAvdkXfFBAyD7LjJaCbRWnFHO0nxzzgPrOSYPCU7uYz99c999fubwjbkwRknh 1gtGdEBP9nmlQ2JLcYWiCAO3Jh1rrAPAr32ArC15Zq828xyTwS0TAR5oCFp06/ZQQP0K 1fZg== X-Forwarded-Encrypted: i=1; AHgh+RoydFKyzigTMnNn1FdlTgLmTN1VbscQ7E+pJk5iac5bQTaP7+ctT5yC83qohNRP6ez4fGSxaAguIZzGXKxV@lists.infradead.org X-Gm-Message-State: AOJu0YxeG/fQ7VX2lCKLjnAMNpcer+rU8Ky33l9Bp2LSoetTZHVu1649 Z57GE40g1dolmL1kkjA/Xc0lEuecE3BsJ0cGbk0hqRN8LTCWGNmg8QoamolUZEZJFTOxdwc7Ru2 UuoRLMWZbmIW6x0FsZrlzdYoZBCwtj+IETTgam3XTK7IHXFuRKT6MRCy0+4tN4uVoUnAaiUXOIA == X-Gm-Gg: AfdE7clqO/IOwfgBoD26z9E545O+H9+5RguRKpGppKXnOIL5MyZh90lW5Am3h+oPJAR 3Svg2iwIJDrdXYg75W4P/ujUdQ+A72qtZZVCmOErDJYjMKOrCQlutetxghmKUor4wENaynAa88J HAgtxclqckGWTr/nwKOC9oemciOHZ4SFkcu8jdazk13Dea6sxR+okHWEAUSJc3bL/XTaZvYDAmz vlgCh6N47qSPaYsbGMRQYoqyJ997aGEyTEqN+VWp4PC5e3dQbYssraiiny5UVtI2vu3S+UtgNOo pRsqQWFq+S4InZiKxWDncGg/3NCMn7LYIr595YtAsw6Mqo02bFg4uDkkVI4XrSgrydkd/VjGtoj ghD3NK9BiTy3iGXcpJof4FQCeWmhUejgPaDvoXsU= X-Received: by 2002:a17:90b:4a51:b0:37c:18e0:90dc with SMTP id 98e67ed59e1d1-38052733442mr2797968a91.16.1782828238903; Tue, 30 Jun 2026 07:03:58 -0700 (PDT) X-Received: by 2002:a17:90b:4a51:b0:37c:18e0:90dc with SMTP id 98e67ed59e1d1-38052733442mr2797918a91.16.1782828238391; Tue, 30 Jun 2026 07:03:58 -0700 (PDT) Received: from brgl-qcom.home ([2a01:cb1d:dc:7e00:a2d4:ac8b:bb21:2661]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-493be171501sm1600495e9.15.2026.06.30.07.03.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jun 2026 07:03:56 -0700 (PDT) From: Bartosz Golaszewski To: Linus Walleij , Bartosz Golaszewski , Viacheslav Bocharov Cc: Bartosz Golaszewski , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Marek Szyprowski , Robin Murphy , Diederik de Haas , linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: (subset) [PATCH v3 0/2] gpio: fix sleeping-in-atomic in shared-proxy; restore meson non-sleeping Date: Tue, 30 Jun 2026 16:03:52 +0200 Message-ID: <178282813039.20935.7644113033947538749.b4-ty@oss.qualcomm.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260630101545.800625-1-v@baodeep.com> References: <20260630101545.800625-1-v@baodeep.com> MIME-Version: 1.0 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjMwMDEzMiBTYWx0ZWRfX0Vz/XS9/tFyo OKaPjt2y0YgYLNJbdTJMPdliOEoLTHmA9tUC4Xfwr6CX98y7dICU5ZAW9OuRX/73uHsQT0ZPqz5 OjnFaaPVIgvLadIxbzGGD8yX+I7zebg= X-Authority-Analysis: v=2.4 cv=KfDidwYD c=1 sm=1 tr=0 ts=6a43ccd0 cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=W7lOHgCGKF-i3LWV3W4A:9 a=QEXdDO2ut3YA:10 a=rl5im9kqc5Lf4LNbBjHf:22 X-Proofpoint-GUID: dW6NKrVNbwyExaVIjk4zG78GKzrUz-xG X-Proofpoint-ORIG-GUID: dW6NKrVNbwyExaVIjk4zG78GKzrUz-xG X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjMwMDEzMiBTYWx0ZWRfX6zBJmhHMNFY5 6UoHycO7ijOOO5PBKqkvrRrh9fmBtgLVNww1K3aBlSHogW1BIqbyUd1777mdbS/oNZGFqO1xbYY Gsd0Kg4Yb7tQjdjcxNMh1GVjnFtcVloldxGzNaScK72ELafuGn7s/GPTYXRYILNZduHJyGL4eNG /t2+Ghmm6lwqlfM7jgzptjVvnnemSsOfXEpwbHMRwAViDoIzk6RpHiC2I8gyJ6/1jaxZXfbmfPc 9QUV2yNOTON8wth85annMqUQQvORsi8kP1TZ57/4vm/CTdxFTGK4EdoJ6bbvNJ7z4uJGMooKVB7 0Mb2JNkDEZlGSnhXK3cBJHexLOs50NoLpBvKxA3Up2QzjcLiXIB8zPynZ8I2qvpcEHg8PnychUa qfzwwMUVS/KgHPyeTkbg9VBpcwnDnw1TxESSSjqoMqg94Ompgn52AfgqwzfKJKMVtFiHOpNmaup AHTLmm7DlSjvPDND95A== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-30_03,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 impostorscore=0 bulkscore=0 clxscore=1015 spamscore=0 priorityscore=1501 lowpriorityscore=0 malwarescore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606300132 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260630_070402_648291_1AEE1121 X-CRM114-Status: GOOD ( 12.34 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org On Tue, 30 Jun 2026 13:15:43 +0300, Viacheslav Bocharov wrote: > gpio-shared-proxy chooses its descriptor lock (mutex vs spinlock) from > the underlying chip's can_sleep, but under that lock it calls config and > direction ops that reach sleeping pinctrl paths. On a controller with > non-sleeping MMIO value ops the lock is a spinlock, so a sleeping call > runs from atomic context: > > BUG: sleeping function called from invalid context > ... pinctrl_gpio_set_config <- gpiochip_generic_config > <- gpio_shared_proxy_set_config (voting spinlock held) > <- ... <- mmc_pwrseq_simple_probe > > [...] There are no build-time dependencies between this and 2/2 so let me queue this for fixes on its own and Linus W can take 2/2. [1/2] gpio: shared-proxy: always serialize with a sleeping mutex https://git.kernel.org/brgl/c/efecde8a254d1f207b75c5ebcfba2c51f4c771d9 Best regards, -- Bartosz Golaszewski _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic