From patchwork Thu Jan 27 23:07:24 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Norris X-Patchwork-Id: 12727523 X-Patchwork-Delegate: cw00.choi@samsung.com 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2251AC4332F for ; Thu, 27 Jan 2022 23:08:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344565AbiA0XI4 (ORCPT ); Thu, 27 Jan 2022 18:08:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57990 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344535AbiA0XIu (ORCPT ); Thu, 27 Jan 2022 18:08:50 -0500 Received: from mail-pf1-x42d.google.com (mail-pf1-x42d.google.com [IPv6:2607:f8b0:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 97AA2C061751 for ; Thu, 27 Jan 2022 15:08:50 -0800 (PST) Received: by mail-pf1-x42d.google.com with SMTP id i186so1899783pfe.0 for ; Thu, 27 Jan 2022 15:08:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=EE6yOukYiRv5t8m4wLbwnB8xsnP3xhP8Res4dSCKaao=; b=nmRFGuUfVGO1KN+i396jwFdqW3ji1pT8oIqYTB5EuvvDuDjJ4JLEpzIqppQ63Ye9oy hIC7Gfe2HCmAYKlFN7ntRE0NoWVXbgljdPNyr9JIyCzAFu3DbwqJUQ5DfovNWtpqnxdG 58KCpRNpof8Q2dQeySnSxQSVVVH/YetiHbpPM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=EE6yOukYiRv5t8m4wLbwnB8xsnP3xhP8Res4dSCKaao=; b=DFca1+STYDfgOoB8O3TZIWthD8sIMtvaO7Z5SzlUmXrChGzRnytBBRjsjUI10FmnXM n8faD7PjXItfLPWN0/pAZ3+R3zCYz07Ck4zlCkAtWRKBVBBtWo9yOB3WvNtsR3CUv7oM bKDa3S3xxwHfPbykapTOy/q/APQwtltZ4m3jjCPry0BeygFOvmYLyFaiaiFYcdaPoJyb LHNaEgiyNigfEb7CrKRx7MCzjeTDudAgY4Z/HVUq3DDIq6+wfsJU3nPZzdYvfQuvzITd hpzAMcs93yHiIF2sCDJj+U/s0F6FU+mbv1jEB1WNSLkTo3UifdjQ99Ujh8KWlKmQqXGi g2fA== X-Gm-Message-State: AOAM530j9Gs9ms+JEcojm/SOLzgI3nloS/STFHU7Dhy9kKUQDNiDnzOD 5mVplM0apX9DMSqZ9xGdrI46Hw== X-Google-Smtp-Source: ABdhPJz2hxjAYMq7nKYFqCN7bLNZ95pkrVKsFwO5nn2OivAjhokfFleQHjW/LAwoP5kPOvqwcxld4Q== X-Received: by 2002:a65:6951:: with SMTP id w17mr4482809pgq.108.1643324930151; Thu, 27 Jan 2022 15:08:50 -0800 (PST) Received: from localhost ([2620:15c:202:201:723d:38a9:9e7f:3435]) by smtp.gmail.com with UTF8SMTPSA id v20sm5384419pfu.155.2022.01.27.15.08.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 27 Jan 2022 15:08:49 -0800 (PST) From: Brian Norris To: MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Rob Herring Cc: linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Lin Huang , linux-arm-kernel@lists.infradead.org, Derek Basehore , devicetree@vger.kernel.org, linux-pm@vger.kernel.org, Heiko Stuebner , Brian Norris Subject: [PATCH v2 13/15] PM / devfreq: rk3399_dmc: Disable edev on remove() Date: Thu, 27 Jan 2022 15:07:24 -0800 Message-Id: <20220127150615.v2.13.I1476960b2586441beaef21dca4feb3ecc067f768@changeid> X-Mailer: git-send-email 2.35.0.rc0.227.g00780c9af4-goog In-Reply-To: <20220127230727.3369358-1-briannorris@chromium.org> References: <20220127230727.3369358-1-briannorris@chromium.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Otherwise we hit an unablanced enable-count when unbinding the DFI device: [ 1279.659119] ------------[ cut here ]------------ [ 1279.659179] WARNING: CPU: 2 PID: 5638 at drivers/devfreq/devfreq-event.c:360 devfreq_event_remove_edev+0x84/0x8c ... [ 1279.659352] Hardware name: Google Kevin (DT) [ 1279.659363] pstate: 80400005 (Nzcv daif +PAN -UAO -TCO BTYPE=--) [ 1279.659371] pc : devfreq_event_remove_edev+0x84/0x8c [ 1279.659380] lr : devm_devfreq_event_release+0x1c/0x28 ... [ 1279.659571] Call trace: [ 1279.659582] devfreq_event_remove_edev+0x84/0x8c [ 1279.659590] devm_devfreq_event_release+0x1c/0x28 [ 1279.659602] release_nodes+0x1cc/0x244 [ 1279.659611] devres_release_all+0x44/0x60 [ 1279.659621] device_release_driver_internal+0x11c/0x1ac [ 1279.659629] device_driver_detach+0x20/0x2c [ 1279.659641] unbind_store+0x7c/0xb0 [ 1279.659650] drv_attr_store+0x2c/0x40 [ 1279.659663] sysfs_kf_write+0x44/0x58 [ 1279.659672] kernfs_fop_write_iter+0xf4/0x190 [ 1279.659684] vfs_write+0x2b0/0x2e4 [ 1279.659693] ksys_write+0x80/0xec [ 1279.659701] __arm64_sys_write+0x24/0x30 [ 1279.659714] el0_svc_common+0xf0/0x1d8 [ 1279.659724] do_el0_svc_compat+0x28/0x3c [ 1279.659738] el0_svc_compat+0x10/0x1c [ 1279.659746] el0_sync_compat_handler+0xa8/0xcc [ 1279.659758] el0_sync_compat+0x188/0x1c0 [ 1279.659768] ---[ end trace cec200e5094155b4 ]--- Signed-off-by: Brian Norris --- Changes in v2: - New patch drivers/devfreq/rk3399_dmc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/devfreq/rk3399_dmc.c b/drivers/devfreq/rk3399_dmc.c index f778564cab49..fca9fcbd4249 100644 --- a/drivers/devfreq/rk3399_dmc.c +++ b/drivers/devfreq/rk3399_dmc.c @@ -452,6 +452,8 @@ static int rk3399_dmcfreq_remove(struct platform_device *pdev) { struct rk3399_dmcfreq *dmcfreq = dev_get_drvdata(&pdev->dev); + devfreq_event_disable_edev(dmcfreq->edev); + /* * Before remove the opp table we need to unregister the opp notifier. */