@@ -319,12 +319,11 @@ static int dlpc_host_attach(struct dlpc *dlpc)
.channel = 0,
.node = NULL,
};
+ int ret;
host = of_find_mipi_dsi_host_by_node(dlpc->host_node);
- if (!host) {
- DRM_DEV_ERROR(dev, "failed to find dsi host\n");
- return -EPROBE_DEFER;
- }
+ if (!host)
+ return dev_err_probe(dev, -EPROBE_DEFER, "failed to find dsi host\n");
dlpc->dsi = mipi_dsi_device_register_full(host, &info);
if (IS_ERR(dlpc->dsi)) {
@@ -336,7 +335,11 @@ static int dlpc_host_attach(struct dlpc *dlpc)
dlpc->dsi->format = MIPI_DSI_FMT_RGB565;
dlpc->dsi->lanes = dlpc->dsi_lanes;
- return devm_mipi_dsi_attach(dev, dlpc->dsi);
+ ret = devm_mipi_dsi_attach(dev, dlpc->dsi);
+ if (ret)
+ DRM_DEV_ERROR(dev, "failed to attach dsi host\n");
+
+ return ret;
}
static int dlpc3433_probe(struct i2c_client *client)
@@ -367,10 +370,8 @@ static int dlpc3433_probe(struct i2c_client *client)
drm_bridge_add(&dlpc->bridge);
ret = dlpc_host_attach(dlpc);
- if (ret) {
- DRM_DEV_ERROR(dev, "failed to attach dsi host\n");
+ if (ret)
goto err_remove_bridge;
- }
return 0;
Given that failing to find a DSI host causes the driver to defer probe, make use of dev_err_probe() to log the reason. This makes the defer probe reason available and avoids alerting userspace about something that is not necessarily an error. Also move the "failed to attach" error message so that it's only printed when the devm_mipi_dsi_attach() call fails. Fixes: 6352cd451ddb ("drm: bridge: Add TI DLPC3433 DSI to DMD bridge") Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: NĂcolas F. R. A. Prado <nfraprado@collabora.com> --- drivers/gpu/drm/bridge/ti-dlpc3433.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-)