[PATCH 1/1] drm/bridge: Silence error messages upon probe deferral

[Alexander Stein]

When -EPROBE_DEFER is returned do not raise an error, but silently return
this error instead. Fixes error like this:
[drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc at 0/bus at 30800000/mipi-dsi at 30a00000 to encoder None-34: -517
[drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc at 0/bus at 30800000/mipi-dsi at 30a00000 to encoder None-34: -517

Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>
---
dev_err_probe() would be the best, but I am not sure if this function is
always used within a driver's probe() call.

 drivers/gpu/drm/drm_bridge.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index c3d69af02e79d..07773d6441a1f 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -350,6 +350,7 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
 	bridge->encoder = NULL;
 	list_del(&bridge->chain_node);
 
+	if (ret != -EPROBE_DEFER) {
 #ifdef CONFIG_OF
 	DRM_ERROR("failed to attach bridge %pOF to encoder %s: %d\n",
 		  bridge->of_node, encoder->name, ret);
@@ -357,6 +358,7 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
 	DRM_ERROR("failed to attach bridge to encoder %s: %d\n",
 		  encoder->name, ret);
 #endif
+	}
 
 	return ret;
 }
-- 
2.34.1