drm/msm/hdmi: fix memory leak after bridge changes

3d3f8b1f8b ("drm/bridge: make bridge registration independent of drm
flow") resulted that the hdmi bridge object would be leaked at teardown.
Just switch over to devm_kzalloc() as the easy way to solve this.

Signed-off-by: Rob Clark <robdclark@gmail.com>

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index d6f8d58..a7a1d82 100644 (file)
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -25,8 +25,6 @@ struct hdmi_bridge {
 
 void hdmi_bridge_destroy(struct drm_bridge *bridge)
 {
-       struct hdmi_bridge *hdmi_bridge = to_hdmi_bridge(bridge);
-       kfree(hdmi_bridge);
 }
 
 static void power_on(struct drm_bridge *bridge)
@@ -209,7 +207,8 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
        struct hdmi_bridge *hdmi_bridge;
        int ret;
 
-       hdmi_bridge = kzalloc(sizeof(*hdmi_bridge), GFP_KERNEL);
+       hdmi_bridge = devm_kzalloc(hdmi->dev->dev,
+                       sizeof(*hdmi_bridge), GFP_KERNEL);
        if (!hdmi_bridge) {
                ret = -ENOMEM;
                goto fail;
@@ -220,7 +219,9 @@ struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi)
        bridge = &hdmi_bridge->base;
        bridge->funcs = &hdmi_bridge_funcs;
 
-       drm_bridge_attach(hdmi->dev, bridge);
+       ret = drm_bridge_attach(hdmi->dev, bridge);
+       if (ret)
+               goto fail;
 
        return bridge;