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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 37FB5C433E1 for ; Mon, 10 Aug 2020 19:15:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 049EB207FF for ; Mon, 10 Aug 2020 19:15:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597086957; bh=BfPjhQ44U9DE3oZzImTFIZQyBr/WqCe9IVpkANI4hnw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fA98+AyZJRHzkivR737pwkw3jDjRiuUC5HeHfHwbQVa1O3rhCjoaTE31TxVVkLWk+ BjoCtwnGehRrDy4ZHGHzVuBUNUDM/3+V7XvlKsPJc+aMupCSFAAvlYDxf9RBud8MKl kR9N9x0D9OFrDON5qODr3zhTV3bglykbkf9HSNHI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730136AbgHJTPB (ORCPT ); Mon, 10 Aug 2020 15:15:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:47396 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730102AbgHJTOu (ORCPT ); Mon, 10 Aug 2020 15:14:50 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5FC3322CAF; Mon, 10 Aug 2020 19:14:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597086890; bh=BfPjhQ44U9DE3oZzImTFIZQyBr/WqCe9IVpkANI4hnw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FvmAKii1siy0HJFqwX1SFK/WzgSG5JyShXidIsvolIB+RjhfUSbyYvj6T9/aEdUq+ eWMt5EUuh6L5aaqj+4SHuUG8Z5XysbxyF1xu0vO262TgdJ0XwxBsnp6j9tCw1/YXF1 o2TRpsreYgP2X71rxdGSpDi1QYI3i8dYOe0hG8Ls= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Aditya Pakki , Evan Quan , Alex Deucher , Sasha Levin , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.4 04/16] drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync Date: Mon, 10 Aug 2020 15:14:31 -0400 Message-Id: <20200810191443.3795581-4-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200810191443.3795581-1-sashal@kernel.org> References: <20200810191443.3795581-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Aditya Pakki [ Upstream commit 9fb10671011143d15b6b40d6d5fa9c52c57e9d63 ] On calling pm_runtime_get_sync() the reference count of the device is incremented. In case of failure, decrement the reference count before returning the error. Acked-by: Evan Quan Signed-off-by: Aditya Pakki Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/radeon/radeon_display.c | 4 +++- drivers/gpu/drm/radeon/radeon_drv.c | 4 +++- drivers/gpu/drm/radeon/radeon_kms.c | 4 +++- 3 files changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 4572bfba017c5..17c73b8c90e71 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -660,8 +660,10 @@ radeon_crtc_set_config(struct drm_mode_set *set) dev = set->crtc->dev; ret = pm_runtime_get_sync(dev->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_autosuspend(dev->dev); return ret; + } ret = drm_crtc_helper_set_config(set); diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index 5b6a6f5b3619e..401403a3ea50c 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -527,8 +527,10 @@ long radeon_drm_ioctl(struct file *filp, long ret; dev = file_priv->minor->dev; ret = pm_runtime_get_sync(dev->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_autosuspend(dev->dev); return ret; + } ret = drm_ioctl(filp, cmd, arg); diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c index d290a8a09036e..41caf7da90548 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -631,8 +631,10 @@ int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv) file_priv->driver_priv = NULL; r = pm_runtime_get_sync(dev->dev); - if (r < 0) + if (r < 0) { + pm_runtime_put_autosuspend(dev->dev); return r; + } /* new gpu have virtual address space support */ if (rdev->family >= CHIP_CAYMAN) { -- 2.25.1