diff --git a/drivers/gpu/drm/tinydrm/mipi-dbi.c b/drivers/gpu/drm/tinydrm/mipi-dbi.c
index 2caecde..2d21b49 100644
--- a/drivers/gpu/drm/tinydrm/mipi-dbi.c
+++ b/drivers/gpu/drm/tinydrm/mipi-dbi.c
@@ -62,9 +62,9 @@
 	if (!len) \
 		DRM_DEBUG_DRIVER("cmd=%02x\n", cmd); \
 	else if (len <= 32) \
-		DRM_DEBUG_DRIVER("cmd=%02x, par=%*ph\n", cmd, len, data); \
+		DRM_DEBUG_DRIVER("cmd=%02x, par=%*ph\n", cmd, (int)len, data);\
 	else \
-		DRM_DEBUG_DRIVER("cmd=%02x, len=%zu\n", cmd, len); \
+		DRM_DEBUG_DRIVER("cmd=%02x, len=%zu\n", cmd, (int)len); \
 })
 
 static const u8 mipi_dbi_dcs_read_commands[] = {