From patchwork Mon Aug 17 15:14:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 266201 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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 2136FC433DF for ; Mon, 17 Aug 2020 18:30:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0824A20758 for ; Mon, 17 Aug 2020 18:30:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597689020; bh=2jF6y1ho6QClZOL+V94Un9aPqfIgQnMFVFaYRGB3EAY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=T02g7498iTpH0SrBkpw3UgshvtmfefFeS+T/dFGv9+KqvEtuUbCTcX1X5MT9fOURc CtIBSLD03065BCBtZZFDtiu6CJT48WdhrAs07pNCAw096TibejKC4KVYjOSNGhp7Xd M3nQNRkC4bV0t0wUh56fU9cxAEx2oEXio2Uz1m/4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390780AbgHQSaT (ORCPT ); Mon, 17 Aug 2020 14:30:19 -0400 Received: from mail.kernel.org ([198.145.29.99]:48802 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388150AbgHQQBq (ORCPT ); Mon, 17 Aug 2020 12:01:46 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 04529208C7; Mon, 17 Aug 2020 16:01:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680101; bh=2jF6y1ho6QClZOL+V94Un9aPqfIgQnMFVFaYRGB3EAY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F12qe+P8yOWyA6/k9oiT0dFBS9UIJR/jm3wXgRDZcRT2OeHNuTwy+PpNjdMdSYjl8 PWlz4nuXtYuefHCotfUo84FEpykZqztbqXsmuQTU+sO9Mxi02in2Wn4Tiu03w9yN1V M7lnhmDMzU8eV8wgjsf8xrVO/pEyets3CVx1a8zw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Evan Quan , Aditya Pakki , Alex Deucher , Sasha Levin Subject: [PATCH 5.4 052/270] drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync Date: Mon, 17 Aug 2020 17:14:13 +0200 Message-Id: <20200817143758.371260771@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143755.807583758@linuxfoundation.org> References: <20200817143755.807583758@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@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 0826efd9b5f51..f9f74150d0d73 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -631,8 +631,10 @@ 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, ctx); diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index 6128792ab8836..7d417b9a52501 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -555,8 +555,10 @@ 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 2bb0187c5bc78..709c4ef5e7d59 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -638,8 +638,10 @@ 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) {