From patchwork Thu Jan 19 23:20:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 13108956 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 4C6C7C004D4 for ; Thu, 19 Jan 2023 23:21:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229879AbjASXVT (ORCPT ); Thu, 19 Jan 2023 18:21:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35228 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229865AbjASXVF (ORCPT ); Thu, 19 Jan 2023 18:21:05 -0500 Received: from mail-pg1-x52f.google.com (mail-pg1-x52f.google.com [IPv6:2607:f8b0:4864:20::52f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C063C392AC; Thu, 19 Jan 2023 15:20:32 -0800 (PST) Received: by mail-pg1-x52f.google.com with SMTP id q9so2837732pgq.5; Thu, 19 Jan 2023 15:20:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=/8VFYGKVQDx9YS3Bf+JaHr5ao9ClGu3C5S4SGB4QR9A=; b=SN+eVLi1DRWR6rpSY2PJV70czrUs98v9bI5D2abVAhBXs5JbxT/xeCGOi/5PrneIJv z8ts8tKo4C2kelodjYn8/A81cUlm28upoURRlm+J3SwgKIC01dXP2G9mlfR21jEHagOt AgdpBaAAlgbn1ztP2fKNvRA16SRAE6fd/KNyNSMEp3yG90WZUR6JdDwzIEuZ60GMMBIE 0XW8EH0lnzwVIF2gaOHYmtuS8/6EgJrt7pM2GPYjOpyq+cVDOixiF7Uz5YrybdLgs16/ FgdBrfm+RiuTgWcb7GVH3jUu5b05CKFys9IlL3fkrZvq7rmH07TFi4ZX/XR8GLWNyRjK HeGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=/8VFYGKVQDx9YS3Bf+JaHr5ao9ClGu3C5S4SGB4QR9A=; b=YMKU7iR/pVkiKulxaDcL2fwiSdG3cwEHInqNGE+cT4ClDuQvGI0tHHJH0Z1sjDGRc1 85jGwZnGnlNdxqFCHMy/doSdnmurMZ1RApUkTVvqsAjgPoJs0iLL5ZcGp5N8NXpYShNb t3TM80JJNofPQ+thbGMFfHlFKkJUVEQgRdRvk6QymUCXmgi4NB3rJhsgnFulobxv36QX C22XZDdZ4ejuxfY8MfPEQ+0dzZkpwqFWXaLHaEwLGbA4hlR8/octloSEFAdCH6F7hSXO ucxU5XPzT3hS8ZpWdaS14WNJTYxCgsncnl0ZOXub+Htr9jGBVjnEkubZMjUMkJBZL0tP eB3A== X-Gm-Message-State: AFqh2kpFHEhJpqFVH9mtm2/XhsVMVWVXSZSNOd41ftNSi+aga6Zj1VsD 0pP/JsF6m6Ci1iqgeTFbGIM= X-Google-Smtp-Source: AMrXdXurMgRBKbvVa+DeeN1KDnY9oIpSJ0B1l7OtzdgBetQn9I69jfzDhB7UqBrcd/mZIzoZShPITQ== X-Received: by 2002:aa7:8506:0:b0:58d:966b:2f63 with SMTP id v6-20020aa78506000000b0058d966b2f63mr11421708pfn.20.1674170432247; Thu, 19 Jan 2023 15:20:32 -0800 (PST) Received: from localhost ([2a00:79e1:abd:4a00:2703:3c72:eb1a:cffd]) by smtp.gmail.com with ESMTPSA id d8-20020aa797a8000000b0058837da69edsm21036005pfq.128.2023.01.19.15.20.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Jan 2023 15:20:31 -0800 (PST) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: Rob Clark , Inki Dae , Seung-Woo Kim , Kyungmin Park , David Airlie , Daniel Vetter , Krzysztof Kozlowski , Alim Akhtar , linux-arm-kernel@lists.infradead.org (moderated list:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES), linux-samsung-soc@vger.kernel.org (open list:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES), linux-kernel@vger.kernel.org (open list) Subject: [PATCH] drm/exynos: Drop unbalanced obj unref Date: Thu, 19 Jan 2023 15:20:37 -0800 Message-Id: <20230119232037.2885568-1-robdclark@gmail.com> X-Mailer: git-send-email 2.38.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org From: Rob Clark In the error path, exynos_drm_gem_mmap() was dropping an obj reference that it doesn't own. Fixes: 832316c704fe ("drm/exynos: use drm generic mmap interface") Signed-off-by: Rob Clark --- drivers/gpu/drm/exynos/exynos_drm_gem.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 3e493f48e0d4..65bca61e63a3 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -363,7 +363,6 @@ int exynos_drm_gem_dumb_create(struct drm_file *file_priv, static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) { struct exynos_drm_gem *exynos_gem = to_exynos_gem(obj); - int ret; if (obj->import_attach) return dma_buf_mmap(obj->dma_buf, vma, 0); @@ -383,16 +382,7 @@ static int exynos_drm_gem_mmap(struct drm_gem_object *obj, struct vm_area_struct vma->vm_page_prot = pgprot_noncached(vm_get_page_prot(vma->vm_flags)); - ret = exynos_drm_gem_mmap_buffer(exynos_gem, vma); - if (ret) - goto err_close_vm; - - return ret; - -err_close_vm: - drm_gem_vm_close(vma); - - return ret; + return exynos_drm_gem_mmap_buffer(exynos_gem, vma); } /* low-level interface prime helpers */