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=-20.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 76E0FC11F66 for ; Tue, 6 Jul 2021 11:34:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6530461396 for ; Tue, 6 Jul 2021 11:34:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236226AbhGFLey (ORCPT ); Tue, 6 Jul 2021 07:34:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:35426 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234778AbhGFLZE (ORCPT ); Tue, 6 Jul 2021 07:25:04 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id F031261D10; Tue, 6 Jul 2021 11:18:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625570334; bh=nNXWJASWbqVzB4ij2p9OyJuCJirxGwfels93t9uK/8c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fvaRXVqYMbJVCyjOjpGxiaWuQx7toyM+Hf3swgq/BN/qrybECmtOCvViHl6stkCPI zx5bS+x7fE8W5UesBI6BHNKQSA25GFsGKLuJWtrblR/rLVh/vmOBNshaj4NWsbGThK bXnrHclEsTQcJEV0hf6sVRYxkUHH1seGsRQQmFfT7sV9Nmb4R9riBOQHyRXl4XVQ+L YDov0Gz8jL0XJx+VWj9KKfNL/uszsugxycCXVynUARdA3gbucHwPG4ia5E7mG0gSoF LUMjNczoie2dw2h2quR69YOnbw97uv2NXSwhB73Kci6MVUhq8GtLVLOvsGSqsLX2Vs vzFCyQefzLaGg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wang Li , Hulk Robot , Chun-Kuang Hu , Sasha Levin , dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.12 020/160] drm/mediatek: Fix PM reference leak in mtk_crtc_ddp_hw_init() Date: Tue, 6 Jul 2021 07:16:06 -0400 Message-Id: <20210706111827.2060499-20-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210706111827.2060499-1-sashal@kernel.org> References: <20210706111827.2060499-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wang Li [ Upstream commit 69777e6ca396f0a7e1baff40fcad4a9d3d445b7a ] pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. Fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Reported-by: Hulk Robot Signed-off-by: Wang Li Signed-off-by: Chun-Kuang Hu Signed-off-by: Sasha Levin --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index 8b0de90156c6..69d23ce56d2c 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -259,7 +259,7 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc) drm_connector_list_iter_end(&conn_iter); } - ret = pm_runtime_get_sync(crtc->dev->dev); + ret = pm_runtime_resume_and_get(crtc->dev->dev); if (ret < 0) { DRM_ERROR("Failed to enable power domain: %d\n", ret); return ret; -- 2.30.2