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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5A065C433FE for ; Thu, 28 Apr 2022 13:19:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1347119AbiD1NWo (ORCPT ); Thu, 28 Apr 2022 09:22:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347125AbiD1NW1 (ORCPT ); Thu, 28 Apr 2022 09:22:27 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 455419681E for ; Thu, 28 Apr 2022 06:19:08 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id EF6831477; Thu, 28 Apr 2022 06:19:07 -0700 (PDT) Received: from [10.1.31.24] (e122027.cambridge.arm.com [10.1.31.24]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D568D3F73B; Thu, 28 Apr 2022 06:19:02 -0700 (PDT) Message-ID: <37dae9fa-dadf-4b80-fbea-689472fd7dce@arm.com> Date: Thu, 28 Apr 2022 14:19:00 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [PATCH v5 01/17] drm/panfrost: Put mapping instead of shmem obj on panfrost_mmu_map_fault_addr() error Content-Language: en-GB To: Dmitry Osipenko , David Airlie , Gerd Hoffmann , Gurchetan Singh , Chia-I Wu , Daniel Vetter , Daniel Almeida , Gert Wollny , Gustavo Padovan , Daniel Stone , Tomeu Vizoso , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Alyssa Rosenzweig , Rob Clark , Emil Velikov , Robin Murphy , Qiang Yu , Sumit Semwal , =?UTF-8?Q?Christian_K=c3=b6nig?= Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Dmitry Osipenko References: <20220424190424.540501-1-dmitry.osipenko@collabora.com> <20220424190424.540501-2-dmitry.osipenko@collabora.com> From: Steven Price In-Reply-To: <20220424190424.540501-2-dmitry.osipenko@collabora.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 24/04/2022 20:04, Dmitry Osipenko wrote: > When panfrost_mmu_map_fault_addr() fails, the BO's mapping should be > unreferenced and not the shmem object that backs that mapping. > > Cc: stable@vger.kernel.org > Signed-off-by: Dmitry Osipenko Fixes: bdefca2d8dc0 ("drm/panfrost: Add the panfrost_gem_mapping concept") Reviewed-by: Steven Price Thanks, Steve > --- > drivers/gpu/drm/panfrost/panfrost_mmu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/panfrost/panfrost_mmu.c b/drivers/gpu/drm/panfrost/panfrost_mmu.c > index d3f82b26a631..b285a8001b1d 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_mmu.c > +++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c > @@ -518,7 +518,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as, > err_pages: > drm_gem_shmem_put_pages(&bo->base); > err_bo: > - drm_gem_object_put(&bo->base.base); > + panfrost_gem_mapping_put(bomapping); > return ret; > } >