Use devm_add_action_or_reset() instead of devres_alloc() and
devres_add(), which works the same. This will simplify the
code. There is no functional changes.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
---
 drivers/gpu/drm/bridge/panel.c | 27 +++++++++++----------------
 1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/bridge/panel.c b/drivers/gpu/drm/bridge/panel.c
index c916f4b..e5ddefb 100644
--- a/drivers/gpu/drm/bridge/panel.c
+++ b/drivers/gpu/drm/bridge/panel.c
@@ -250,11 +250,9 @@ void drm_panel_bridge_remove(struct drm_bridge *bridge)
 }
 EXPORT_SYMBOL(drm_panel_bridge_remove);

-static void devm_drm_panel_bridge_release(struct device *dev, void *res)
+static void devm_drm_panel_bridge_release(void *bridge)
 {
-       struct drm_bridge **bridge = res;
-
-       drm_panel_bridge_remove(*bridge);
+       drm_panel_bridge_remove(bridge);
 }

 /**
@@ -295,20 +293,17 @@ struct drm_bridge *devm_drm_panel_bridge_add_typed(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);
+       struct drm_bridge *bridge;
+       int ret;

        bridge = drm_panel_bridge_add_typed(panel, connector_type);
-       if (!IS_ERR(bridge)) {
-               *ptr = bridge;
-               devres_add(dev, ptr);
-       } else {
-               devres_free(ptr);
-       }
+       if (IS_ERR(bridge))
+               return bridge;
+
+       ret = devm_add_action_or_reset(dev, devm_drm_panel_bridge_release,
+                                      bridge);
+       if (ret)
+               return ERR_PTR(ret);

        return bridge;
 }