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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,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 9EA26C433B4 for ; Thu, 13 May 2021 17:18:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 833226143B for ; Thu, 13 May 2021 17:18:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230518AbhEMRTT (ORCPT ); Thu, 13 May 2021 13:19:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52838 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230452AbhEMRS4 (ORCPT ); Thu, 13 May 2021 13:18:56 -0400 Received: from mail-qt1-x832.google.com (mail-qt1-x832.google.com [IPv6:2607:f8b0:4864:20::832]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50CA0C06174A for ; Thu, 13 May 2021 10:17:46 -0700 (PDT) Received: by mail-qt1-x832.google.com with SMTP id g13so20281120qts.4 for ; Thu, 13 May 2021 10:17:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marek-ca.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=vtcWXueKeAtIy7pr8ysMAsDhI84/bQavYtJj4cDVdxg=; b=XJaZw0EIaBW/QFexRuVnVyBbRmNCRJ2gJtFJ6vLkDp4n14A1Y6bWlnc6ZR5L0DVZG8 X75BViMl3jg4gOdBBtTGwgtYR37li3MzpCTRnm4m3LethmNnNqUrSEiPqoNwpFesXGXa hiuTiCGqUi4uwNJ5OVf3Hb7AIFgT04OsRO3pbLxgXV8V1DmzxGWtTd7CW7gOu+HNit8O Vrtrw99qFaE/aTAlcrUJEvBCPWqEcbID/UNmgAJ7Xh854aSdDAPZ3/RtFS2brZ8+j+/l 4TbzE1nuVZnx/kaMKcAOqL8g8K9ShjvQecZ4TLiyWIHYSuZ1vCVClO+C1JCVfKaKE07N e0qQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=vtcWXueKeAtIy7pr8ysMAsDhI84/bQavYtJj4cDVdxg=; b=n3UmJ4A5GH0Gh/UxXZqeeRCcmo1WBxtglIgTgWAovlXbBapGVFjU4hijxR4Oe8RHfB lxiepHpG9W5LqSUwmZ8c8MXx8tBgO+NIDJQIOBHDjTTbuxOqppf8yZiw4YX8+yELIdoD 0wdK4wk1DyJMUl9P2z8geBscqE1+sMXXBOgnE7pCrUTaih3/9dJH82mEEr4Ju6vHSnt+ Mr5WfHoqsRuDGImbABOtPPK/Q/Mu1U15+hLg4ZONeBDJW//QGiAIRViIxSHOKkc6AGSx eTE2Xffb2zkoIUSusr7sO/idic5axKsoF9S1qB9OnWyM6Ssq7A+0tPpn3EqL8jlyT56P ZvUQ== X-Gm-Message-State: AOAM530ieQN5QYKiwDULkvfSmxL9f6RPFmnKMBhF8sJgH/rXy4x9JhNm QT7eN8kETYfi1WOyuCbUMl9PZg== X-Google-Smtp-Source: ABdhPJzvUuhCGoKvD75q243OUY0ynqEWiKx0cDPEphR/pkhflStoU/KRIs60dR7Z4UpNDm+m3/n3DQ== X-Received: by 2002:ac8:6d31:: with SMTP id r17mr38430161qtu.295.1620926265600; Thu, 13 May 2021 10:17:45 -0700 (PDT) Received: from localhost.localdomain (modemcable068.184-131-66.mc.videotron.ca. [66.131.184.68]) by smtp.gmail.com with ESMTPSA id f132sm2971117qke.104.2021.05.13.10.17.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 May 2021 10:17:45 -0700 (PDT) From: Jonathan Marek To: freedreno@lists.freedesktop.org Cc: Rob Clark , Sean Paul , David Airlie , Daniel Vetter , Jordan Crouse , Akhil P Oommen , Sai Prakash Ranjan , Eric Anholt , Sharat Masetty , Douglas Anderson , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), dri-devel@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v2 5/8] drm/msm/a6xx: avoid shadow NULL reference in failure path Date: Thu, 13 May 2021 13:14:00 -0400 Message-Id: <20210513171431.18632-6-jonathan@marek.ca> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20210513171431.18632-1-jonathan@marek.ca> References: <20210513171431.18632-1-jonathan@marek.ca> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If a6xx_hw_init() fails before creating the shadow_bo, the a6xx_pm_suspend code referencing it will crash. Change the condition to one that avoids this problem (note: creation of shadow_bo is behind this same condition) Fixes: e8b0b994c3a5 ("drm/msm/a6xx: Clear shadow on suspend") Signed-off-by: Jonathan Marek --- drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c index 909e3ff08f89..ff3c328604f8 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c @@ -1284,7 +1284,7 @@ static int a6xx_pm_suspend(struct msm_gpu *gpu) if (ret) return ret; - if (adreno_gpu->base.hw_apriv || a6xx_gpu->has_whereami) + if (a6xx_gpu->shadow_bo) for (i = 0; i < gpu->nr_rings; i++) a6xx_gpu->shadow[i] = 0; -- 2.26.1