From: Boris Brezillon <boris.brezillon@bootlin.com>
Date: Tue, 3 Jul 2018 09:50:15 +0200
Subject: drm/atomic: Avoid connector to writeback_connector casts
Git-commit: b82c1f8f78b4d273d1bcefe3e805eff61e879a68
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Use container_of() instead of type casting so that it keeps working
even if base is moved inside the drm_writeback_connector struct.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-2-boris.brezillon@bootlin.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/drm_atomic.c | 4 +++-
include/drm/drm_writeback.h | 6 ++++++
2 files changed, 9 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -2428,6 +2428,7 @@ static int prepare_signaling(struct drm_
}
for_each_new_connector_in_state(state, conn, conn_state, i) {
+ struct drm_writeback_connector *wb_conn;
struct drm_writeback_job *job;
struct drm_out_fence_state *f;
struct dma_fence *fence;
@@ -2451,7 +2452,8 @@ static int prepare_signaling(struct drm_
f[*num_fences].out_fence_ptr = fence_ptr;
*fence_state = f;
- fence = drm_writeback_get_out_fence((struct drm_writeback_connector *)conn);
+ wb_conn = drm_connector_to_writeback(conn);
+ fence = drm_writeback_get_out_fence(wb_conn);
if (!fence)
return -ENOMEM;
--- a/include/drm/drm_writeback.h
+++ b/include/drm/drm_writeback.h
@@ -110,6 +110,12 @@ struct drm_writeback_job {
struct dma_fence *out_fence;
};
+static inline struct drm_writeback_connector *
+drm_connector_to_writeback(struct drm_connector *connector)
+{
+ return container_of(connector, struct drm_writeback_connector, base);
+}
+
int drm_writeback_connector_init(struct drm_device *dev,
struct drm_writeback_connector *wb_connector,
const struct drm_connector_funcs *con_funcs,