[PATCH 2/3] drm/bridge: ite-it66121: log an error if the IDs do not match

[Luca Ceresoli]

If the IDs read from the chip do not match any of the known models,
it66121_probe() fails silently, making troubleshooting unnecessarily
difficult. Log an error to clarify the failure reason, showing the IDs read
from the hardware.

Signed-off-by: Luca Ceresoli <luca.ceresoli@xxxxxxxxxxx>
---
 drivers/gpu/drm/bridge/ite-it66121.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c
index 9b43456c67a1..49eb8318e974 100644
--- a/drivers/gpu/drm/bridge/ite-it66121.c
+++ b/drivers/gpu/drm/bridge/ite-it66121.c
@@ -1675,7 +1675,8 @@ static int it66121_probe(struct i2c_client *client)
 	}
 
 	if (i == ARRAY_SIZE(it66xx_chip_info))
-		return -ENODEV;
+		return dev_err_probe(dev, -ENODEV, "Unknown vendor %04x device %04x (rev %01x)\n",
+				     vendor_id, device_id, revision_id);
 
 	ctx->bridge.of_node = dev->of_node;
 	ctx->bridge.type = DRM_MODE_CONNECTOR_HDMIA;

-- 
2.56.0