| Message ID | 20180611133502.1292-4-heiko@sntech.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c index 691f67bc2ff9..1b4f6bb7ea59 100644 --- a/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c +++ b/drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c @@ -839,6 +839,9 @@ static int dw_mipi_dsi_bridge_attach(struct drm_bridge *bridge) return -ENODEV; } + if (!dsi->panel_bridge) + return -EPROBE_DEFER; + /* Set the encoder type as caller does not know it */ bridge->encoder->encoder_type = DRM_MODE_ENCODER_DSI;
When the panel-driver is build as a module it currently fails hard as the panel cannot be probed directly: dw_mipi_dsi_bind() __dw_mipi_dsi_probe() creates dsi bus creates panel device triggers panel module load panel not probed (module not loaded or panel probe slow) drm_bridge_attach fails with -EINVAL due to empty panel_bridge So emit a -EPROBE_DEFER in that case to give the driver another chance at getting the display later. Signed-off-by: Heiko Stuebner <heiko@sntech.de> --- drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c | 3 +++ 1 file changed, 3 insertions(+)