From patchwork Mon Aug 17 15:16:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 266362 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 BBECCC433E1 for ; Mon, 17 Aug 2020 16:12:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9426820772 for ; Mon, 17 Aug 2020 16:12:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680737; bh=yaPHivpJPbiqQQqOMXNt9cr1XXaJHKlr8/U2bl3aMcE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=u+nGvEkRytVDJolmEEHxvj/BrO5DV3EcmiTYUJTEhsV1I5gI/siFPgldeWwTu3C4T WtnjTVrFEzy47RhsRIi8kIJvVfQYlHg1lRLdJxUO20Jv9PrXtC2IUruYSphB5Ecnnq wZBxVsaEKQlvszhbrPywdTS0xDCGAeygou3Y+7os= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388675AbgHQQMP (ORCPT ); Mon, 17 Aug 2020 12:12:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:42960 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388665AbgHQQMH (ORCPT ); Mon, 17 Aug 2020 12:12:07 -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 C393E207FB; Mon, 17 Aug 2020 16:12:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1597680727; bh=yaPHivpJPbiqQQqOMXNt9cr1XXaJHKlr8/U2bl3aMcE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OuHCGEanxyGLce9huGNLUDayb/e3+nMDrmk5/AQnbDDYdWQCocEycIRG10ewUS91q kWfgFnxkwckawdq4nbQuXzFAoCSJ7BCpMnBDpq0VYTY6w8+6bs1kEGYwKm9+k9I+x5 L7s3ayoHkIlSrm1y4mWrhiINE5WnhbVYYtHrktR4= 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 4.19 031/168] drm/radeon: Fix reference count leaks caused by pm_runtime_get_sync Date: Mon, 17 Aug 2020 17:16:02 +0200 Message-Id: <20200817143735.313274133@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817143733.692105228@linuxfoundation.org> References: <20200817143733.692105228@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 7d1e14f0140a2..3f0f3a578ddf0 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -625,8 +625,10 @@ 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 c26f09b47ecb2..54729acd0d4af 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -523,8 +523,10 @@ 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 3ff835767ac58..34b3cb6c146f9 100644 --- a/drivers/gpu/drm/radeon/radeon_kms.c +++ b/drivers/gpu/drm/radeon/radeon_kms.c @@ -627,8 +627,10 @@ 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) {