lkml.org 
[lkml]   [2017]   [Jun]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/8] drm/bridge: Add a devm_ allocator for panel bridge.
Date
This will let drivers reduce the error cleanup they need, in
particular the "is_panel_bridge" flag.

Signed-off-by: Eric Anholt <eric@anholt.net>
---
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 67fe19e5a9c6..cdf367d2653a 100644
--- a/drivers/gpu/drm/bridge/panel.c
+++ b/drivers/gpu/drm/bridge/panel.c
@@ -198,3 +198,33 @@ 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 = *(struct drm_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
\
 
 \ /
  Last update: 2017-06-27 22:00    [W:0.261 / U:0.068 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site