From patchwork Tue Jul 31 06:15:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 10550103 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C1E8A139A for ; Tue, 31 Jul 2018 06:15:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B01382A6B4 for ; Tue, 31 Jul 2018 06:15:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A476A2A6BA; Tue, 31 Jul 2018 06:15:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 63C4F2A6B4 for ; Tue, 31 Jul 2018 06:15:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DFE1989A98; Tue, 31 Jul 2018 06:15:43 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1C15F89A4A for ; Tue, 31 Jul 2018 06:15:39 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id AE480AFB0; Tue, 31 Jul 2018 06:15:37 +0000 (UTC) From: Thomas Zimmermann To: bskeggs@redhat.com, dri-devel@lists.freedesktop.org Subject: [PATCH 2/2] drm/nouveau: Replace ttm_bo_unref with ttm_bo_put Date: Tue, 31 Jul 2018 08:15:33 +0200 Message-Id: <20180731061533.9667-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180731061533.9667-1-tzimmermann@suse.de> References: <20180731061533.9667-1-tzimmermann@suse.de> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Zimmermann MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The function ttm_bo_put releases a reference to a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. A call to ttm_bo_unref takes the address of the TTM BO object's pointer and clears the pointer's value to NULL. This is not necessary in most cases and sometimes even worked around by the calling code. A call to ttm_bo_put only releases the reference without clearing the pointer. The current behaviour of cleaning the pointer is kept in the calling code, but should be removed if not required in a later patch. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/nouveau/nouveau_bo.h | 2 +- drivers/gpu/drm/nouveau/nouveau_gem.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.h b/drivers/gpu/drm/nouveau/nouveau_bo.h index 3920134cb132..e7b3d4d90aee 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.h +++ b/drivers/gpu/drm/nouveau/nouveau_bo.h @@ -70,7 +70,7 @@ nouveau_bo_ref(struct nouveau_bo *ref, struct nouveau_bo **pnvbo) if (prev) { struct ttm_buffer_object *bo = &prev->bo; - ttm_bo_unref(&bo); + ttm_bo_put(bo); } return 0; diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index b56524d343c3..d0805364d3c1 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -56,7 +56,7 @@ nouveau_gem_object_del(struct drm_gem_object *gem) /* reset filp so nouveau_bo_del_ttm() can test for it */ gem->filp = NULL; - ttm_bo_unref(&bo); + ttm_bo_put(bo); pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev);