From 67022227ffb1f588e70deeccc9246ec93e26f980 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 18 Jul 2017 14:05:06 -0700 Subject: drm/bridge: Add a devm_ allocator for panel bridge. 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 Reviewed-by: Philippe Cornu Tested-by: Philippe Cornu Link: https://patchwork.freedesktop.org/patch/msgid/20170718210510.12229-2-eric@anholt.net --- drivers/gpu/drm/bridge/panel.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'drivers/gpu/drm/bridge') 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); -- cgit v1.2.3-59-g8ed1b