Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752461AbdGRVF6 (ORCPT ); Tue, 18 Jul 2017 17:05:58 -0400 Received: from anholt.net ([50.246.234.109]:50536 "EHLO anholt.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752171AbdGRVFR (ORCPT ); Tue, 18 Jul 2017 17:05:17 -0400 From: Eric Anholt To: dri-devel@lists.freedesktop.org, Archit Taneja , Andrzej Hajda , Laurent Pinchart , Thierry Reding Cc: linux-kernel@vger.kernel.org, Eric Anholt Subject: [PATCH v5 2/6] drm/bridge: Add a devm_ allocator for panel bridge. Date: Tue, 18 Jul 2017 14:05:06 -0700 Message-Id: <20170718210510.12229-2-eric@anholt.net> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170718210510.12229-1-eric@anholt.net> References: <20170718210510.12229-1-eric@anholt.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1991 Lines: 66 This will let drivers reduce the error cleanup they need, in particular the "is_panel_bridge" flag. v2: Slight cleanup of remove function by Andrzej Signed-off-by: Eric Anholt Reviewed-by: Andrzej Hajda --- drivers/gpu/drm/bridge/panel.c | 30 ++++++++++++++++++++++++++++++ include/drm/drm_bridge.h | 3 +++ 2 files changed, 33 insertions(+) diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c index 685c1a480201..292ee92a9c97 100644 --- a/drivers/gpu/drm/bridge/panel.c +++ b/drivers/gpu/drm/bridge/panel.c @@ -195,3 +195,33 @@ void drm_panel_bridge_remove(struct drm_bridge *bridge) devm_kfree(panel_bridge->panel->dev, bridge); } EXPORT_SYMBOL(drm_panel_bridge_remove); + +static void devm_drm_panel_bridge_release(struct device *dev, void *res) +{ + struct drm_bridge **bridge = res; + + drm_panel_bridge_remove(*bridge); +} + +struct drm_bridge *devm_drm_panel_bridge_add(struct device *dev, + struct drm_panel *panel, + u32 connector_type) +{ + struct drm_bridge **ptr, *bridge; + + ptr = devres_alloc(devm_drm_panel_bridge_release, sizeof(*ptr), + GFP_KERNEL); + if (!ptr) + return ERR_PTR(-ENOMEM); + + bridge = drm_panel_bridge_add(panel, connector_type); + if (!IS_ERR(bridge)) { + *ptr = bridge; + devres_add(dev, ptr); + } else { + devres_free(ptr); + } + + return bridge; +} +EXPORT_SYMBOL(devm_drm_panel_bridge_add); diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h index 1dc94d5392e2..6522d4cbc9d9 100644 --- a/include/drm/drm_bridge.h +++ b/include/drm/drm_bridge.h @@ -268,6 +268,9 @@ void drm_bridge_enable(struct drm_bridge *bridge); struct drm_bridge *drm_panel_bridge_add(struct drm_panel *panel, u32 connector_type); void drm_panel_bridge_remove(struct drm_bridge *bridge); +struct drm_bridge *devm_drm_panel_bridge_add(struct device *dev, + struct drm_panel *panel, + u32 connector_type); #endif #endif -- 2.11.0