From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EA569349CFF; Sat, 12 Sep 2026 14:24:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789223086; cv=none; b=ptWDkPIRdUjltBzap/l0BseaSVN59P7eJOTBaE/xg3Fv7Z3M4xtUydAIp/igK2f2sCrh8m4i1LeRyM4TXgcrN/zaysXFrsnM7KfltwETT8NrdXEXkcHubmJkDO6dOYoWk/rr9tGZHaBMgS1AAoIuuTkzMhMWcp1xui5bQJR96Jg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789223086; c=relaxed/simple; bh=z1kwUpPEFLcQ3e0+f5NItgIS3sBGTwqw7h1LAm2hi+s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=u59wwh481MvFQF9JtfqiuKZT0ZNx0kuz2zqBf3eWRPM/yU4ZmEX3toUwJpqLgL+WABZYQI6PVzlTG+fbj6y8vnlkyyk7u29rJw9CToWVj8gx/iM02egVkpwF4DZwcdVuHpM5YcQus9fwGN9fKJiA37vq9IEFf7CMGqFOWwnPQ38= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=O3rcgMsS; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="O3rcgMsS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 028251F00893; Sat, 12 Sep 2026 14:24:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789223082; bh=BnRQMJYnMActymP2WBg+X60ilApo50VnPcOIimt9Iyw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=O3rcgMsSjxpCp1G+Bz1UtSZAu+rVCt0Pv+vE43GNlTOyylubDgb0JlpuhgrmPfaui SEUjM3Zvc5TEZZoReHHP271VE6nek4ZWdK/MMW02pMeMWgTMEkzL1kI33vk1r8xvnm pn0LY1QzND5xhcrcaX8T4HrqHHecfNQEmxVU9oR8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Pengpeng Hou , Konrad Dybcio , Bjorn Andersson , Sasha Levin Subject: [PATCH 6.6 0715/1424] soc: qcom: rpmh-rsc: manage PM notifiers with devres Date: Sat, 12 Sep 2026 08:52:27 +0200 Message-ID: <20260912065623.307150605@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.279695368@linuxfoundation.org> References: <20260912065607.279695368@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Pengpeng Hou [ Upstream commit 75e918aa876440d8ad559a11d6ab87bddb1ed79a ] rpmh_rsc_probe() registers CPU PM or genpd notifiers before populating child devices. If child population fails, the CPU PM notifier path is not unwound and the genpd path needs open-coded cleanup. Use devm_pm_runtime_enable() for the genpd path and devm_add_action_or_reset() for both notifier registrations. This makes probe failure and driver detach use the same cleanup model while keeping devm_of_platform_populate() responsible for child devices. Fixes: 25092e6100ac ("soc: qcom: rpmh-rsc: Attach RSC to cluster PM domain") Signed-off-by: Pengpeng Hou Reviewed-by: Konrad Dybcio Link: https://lore.kernel.org/r/20260623015501.31129-1-pengpeng@iscas.ac.cn Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- drivers/soc/qcom/rpmh-rsc.c | 37 ++++++++++++++++++++++++++----------- 1 file changed, 26 insertions(+), 11 deletions(-) diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index d0ec42ec0d041..2f1336af77949 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -944,17 +944,30 @@ static int rpmh_rsc_pd_callback(struct notifier_block *nfb, return NOTIFY_OK; } +static void rpmh_rsc_pd_detach(void *data) +{ + dev_pm_genpd_remove_notifier(data); +} + static int rpmh_rsc_pd_attach(struct rsc_drv *drv, struct device *dev) { int ret; - pm_runtime_enable(dev); + ret = devm_pm_runtime_enable(dev); + if (ret) + return ret; + drv->genpd_nb.notifier_call = rpmh_rsc_pd_callback; ret = dev_pm_genpd_add_notifier(dev, &drv->genpd_nb); if (ret) - pm_runtime_disable(dev); + return ret; - return ret; + return devm_add_action_or_reset(dev, rpmh_rsc_pd_detach, dev); +} + +static void rpmh_rsc_cpu_pm_unregister(void *data) +{ + cpu_pm_unregister_notifier(data); } static int rpmh_probe_tcs_config(struct platform_device *pdev, struct rsc_drv *drv) @@ -1110,7 +1123,15 @@ static int rpmh_rsc_probe(struct platform_device *pdev) return ret; } else { drv->rsc_pm.notifier_call = rpmh_rsc_cpu_pm_callback; - cpu_pm_register_notifier(&drv->rsc_pm); + ret = cpu_pm_register_notifier(&drv->rsc_pm); + if (ret) + return ret; + + ret = devm_add_action_or_reset(&pdev->dev, + rpmh_rsc_cpu_pm_unregister, + &drv->rsc_pm); + if (ret) + return ret; } } @@ -1125,13 +1146,7 @@ static int rpmh_rsc_probe(struct platform_device *pdev) dev_set_drvdata(&pdev->dev, drv); drv->dev = &pdev->dev; - ret = devm_of_platform_populate(&pdev->dev); - if (ret && pdev->dev.pm_domain) { - dev_pm_genpd_remove_notifier(&pdev->dev); - pm_runtime_disable(&pdev->dev); - } - - return ret; + return devm_of_platform_populate(&pdev->dev); } static const struct of_device_id rpmh_drv_match[] = { -- 2.53.0