From patchwork Wed Sep 7 09:52:40 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 9318751 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 323E46077F for ; Wed, 7 Sep 2016 09:52:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 19747290FF for ; Wed, 7 Sep 2016 09:52:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0CF31291CA; Wed, 7 Sep 2016 09:52:46 +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=-4.2 required=2.0 tests=BAYES_00, 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 0D684291CE for ; Wed, 7 Sep 2016 09:52:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6BD466E98F; Wed, 7 Sep 2016 09:52:44 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 17C856E98F for ; Wed, 7 Sep 2016 09:52:43 +0000 (UTC) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga101.jf.intel.com with ESMTP; 07 Sep 2016 02:52:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.30,296,1470726000"; d="scan'208"; a="1052505603" Received: from arturzak-mobl.ger.corp.intel.com (HELO patser.lan) ([10.252.9.108]) by fmsmga002.fm.intel.com with ESMTP; 07 Sep 2016 02:52:41 -0700 Subject: [PATCH] Revert "drm: Unify handling of blob and object properties" To: Ying Liu , Daniel Vetter References: <20160829082757.17913-1-daniel.vetter@ffwll.ch> <20160829082757.17913-8-daniel.vetter@ffwll.ch> From: Maarten Lankhorst Message-ID: <8c0d3482-1bb5-6a15-b105-6bda2b31b5dc@linux.intel.com> Date: Wed, 7 Sep 2016 11:52:40 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: Cc: Daniel Stone , DRI Development X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP This reverts commit 77953bd136d2a70bca2dc93b3ccda07a2b37076f. This causes a kernel panic when trying to assign a blob to a property, and has obviously never been tested. Signed-off-by: Maarten Lankhorst Tested-by: Liu Ying --- drivers/gpu/drm/drm_property.c | 23 ++++++++++++++++++----- 1 file changed, 18 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/drm_property.c b/drivers/gpu/drm/drm_property.c index 4139afbcc267..a4d81cf4ffa0 100644 --- a/drivers/gpu/drm/drm_property.c +++ b/drivers/gpu/drm/drm_property.c @@ -870,8 +870,20 @@ bool drm_property_change_valid_get(struct drm_property *property, for (i = 0; i < property->num_values; i++) valid_mask |= (1ULL << property->values[i]); return !(value & ~valid_mask); - } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB) || - drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) { + } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) { + struct drm_property_blob *blob; + + if (value == 0) + return true; + + blob = drm_property_lookup_blob(property->dev, value); + if (blob) { + *ref = &blob->base; + return true; + } else { + return false; + } + } else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) { /* a zero value for an object property translates to null: */ if (value == 0) return true; @@ -888,12 +900,13 @@ bool drm_property_change_valid_get(struct drm_property *property, } void drm_property_change_valid_put(struct drm_property *property, - struct drm_mode_object *ref) + struct drm_mode_object *ref) { if (!ref) return; - if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT) || - drm_property_type_is(property, DRM_MODE_PROP_BLOB)) + if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) { drm_mode_object_unreference(ref); + } else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) + drm_property_unreference_blob(obj_to_blob(ref)); }