As an aid to debugging.

Signed-off-by: John Keeping <john at metanate.com>
---
 drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c 
b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
index 38186df8476e..a25db02e1c19 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
@@ -645,7 +645,8 @@ static ssize_t dw_mipi_dsi_host_transfer(struct 
mipi_dsi_host *host,
                ret = dw_mipi_dsi_dcs_long_write(dsi, msg);
                break;
        default:
-               dev_err(dsi->dev, "unsupported message type\n");
+               dev_err(dsi->dev, "unsupported message type 0x%02x\n",
+                       msg->type);
                ret = -EINVAL;
        }

-- 
2.10.0.278.g4f427b1.dirty

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