From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 403581856AE; Sun, 24 Mar 2024 22:40:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711320043; cv=none; b=p1zY2H5fLWOYYoJ49kb46auOMu2/PAuuDNhFfX47beUYO6O/XW2teYqsv0lOW+EjnqCFEeROWEVCooDBv8/w2eNZVOB975t/MEqJaW5zm74cgLKxBG9oeXbGLyoMM0B05eMVStJogA3zdHfekDN3ewWgH0sZK+pqTcPSMnCaEDc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711320043; c=relaxed/simple; bh=6PYzZwYgCOek78YwuwPl9iW6KBnvVCcfXpsYYRC/mW0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AKa+RBrwYFoFgyfen0BkVMupLx3WAvEYPFWkb0pK7+S2wrAfcZ6Uh0UTS1hClMigTU3Ce0BG4XArV63Ox0NUPvnb7qjE7Hje3RCQY/yo+LqXcAVAr+J3XBNZpnadDhBIDzxyKFkMEaiaiFGHSV0qEAgTpBPsvI/aZgQPg4bHDvc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PwBS5yZB; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="PwBS5yZB" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 28028C43394; Sun, 24 Mar 2024 22:40:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711320042; bh=6PYzZwYgCOek78YwuwPl9iW6KBnvVCcfXpsYYRC/mW0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PwBS5yZBu/nIucAtD0rFFqbrJm6DAXowhk8yAq3Wt0UNwVwNqgvKL81DIVEBIoi6q K6TgJHmun/4aoRZt4uILZPcjQW1ZVvmNxUAgvqWKzkPYLXgivI6XoQ2DlR1+qRWbwH Lk/5oKb+TwiyyqLedrId8UtTMaB2Hgv7W3JJin5m+GNXVyHrYTxE7x1zbPLrWwRPpG aHHmHkpstV5dFA0I0rWb433myCbnpga8W6BaT31er+0qAdEsU+Q9k+z+OPOFYgZhwt DsmGDsa3OJdw2JE55/80TqyTr27mFePpud3WChKQGFQdDf3FICgRZZY5GJd4OZHVCu vL9s2LTTjpagQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zhang Shurong , Thierry Reding , Sasha Levin Subject: [PATCH 6.8 351/715] drm/tegra: dpaux: Fix PM disable depth imbalance in tegra_dpaux_probe Date: Sun, 24 Mar 2024 18:28:50 -0400 Message-ID: <20240324223455.1342824-352-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324223455.1342824-1-sashal@kernel.org> References: <20240324223455.1342824-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Zhang Shurong [ Upstream commit 0800880f4eb789b7d299db40f2e86e056bd33a4e ] The pm_runtime_enable function increases the power disable depth, which means that we must perform a matching decrement on the error handling path to maintain balance within the given context. Additionally, we need to address the same issue for pm_runtime_get_sync. We fix this by invoking pm_runtime_disable and pm_runtime_put_sync when error returns. Fixes: 82b81b3ec1a7 ("drm/tegra: dpaux: Implement runtime PM") Signed-off-by: Zhang Shurong Signed-off-by: Thierry Reding Link: https://patchwork.freedesktop.org/patch/msgid/tencent_B13DB7F6C0023C46157250A524966F326A09@qq.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/tegra/dpaux.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index ef02d530f78d7..ae12d001a04bf 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -522,7 +522,7 @@ static int tegra_dpaux_probe(struct platform_device *pdev) if (err < 0) { dev_err(dpaux->dev, "failed to request IRQ#%u: %d\n", dpaux->irq, err); - return err; + goto err_pm_disable; } disable_irq(dpaux->irq); @@ -542,7 +542,7 @@ static int tegra_dpaux_probe(struct platform_device *pdev) */ err = tegra_dpaux_pad_config(dpaux, DPAUX_PADCTL_FUNC_I2C); if (err < 0) - return err; + goto err_pm_disable; #ifdef CONFIG_GENERIC_PINCONF dpaux->desc.name = dev_name(&pdev->dev); @@ -555,7 +555,8 @@ static int tegra_dpaux_probe(struct platform_device *pdev) dpaux->pinctrl = devm_pinctrl_register(&pdev->dev, &dpaux->desc, dpaux); if (IS_ERR(dpaux->pinctrl)) { dev_err(&pdev->dev, "failed to register pincontrol\n"); - return PTR_ERR(dpaux->pinctrl); + err = PTR_ERR(dpaux->pinctrl); + goto err_pm_disable; } #endif /* enable and clear all interrupts */ @@ -571,10 +572,15 @@ static int tegra_dpaux_probe(struct platform_device *pdev) err = devm_of_dp_aux_populate_ep_devices(&dpaux->aux); if (err < 0) { dev_err(dpaux->dev, "failed to populate AUX bus: %d\n", err); - return err; + goto err_pm_disable; } return 0; + +err_pm_disable: + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + return err; } static void tegra_dpaux_remove(struct platform_device *pdev) -- 2.43.0