Hello Jonas Karlman,
Commit dc70272cc184 ("drm/rockchip: dw_hdmi: Propagate bus format to
display driver") from May 18, 2026 (linux-next), leads to the
following Smatch static checker warning:
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c:289
dw_hdmi_rockchip_get_bus_format()
warn: 'bridge_state' is an error pointer or valid
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
278 static u32 dw_hdmi_rockchip_get_bus_format(struct drm_encoder *encoder,
279 struct drm_connector_state
*conn_state)
280 {
281 struct drm_bridge *bridge __free(drm_bridge_put) = NULL;
282 struct drm_bridge_state *bridge_state;
283
284 bridge = drm_bridge_chain_get_first_bridge(encoder);
285 if (!bridge)
286 return 0;
287
288 bridge_state = drm_atomic_get_bridge_state(conn_state->state,
bridge);
--> 289 if (!bridge_state)
drm_atomic_get_bridge_state() never returns NULL, only error pointers.
290 return 0;
291
292 if (bridge_state->input_bus_cfg.format != MEDIA_BUS_FMT_FIXED)
293 return bridge_state->input_bus_cfg.format;
294
295 return bridge_state->output_bus_cfg.format;
296 }
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regards,
dan carpenter
