diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 034ad810fd65..88843505d89c 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -576,7 +576,7 @@ static unsigned long dsi_get_pclk_rate(struct msm_dsi_host *msm_host, bool is_bo
 	struct drm_display_mode *mode = msm_host->mode;
 	unsigned long pclk_rate;
 
-	pclk_rate = mode->clock * 1000;
+	pclk_rate = mode->clock * 1000u;
 
 	/*
 	 * For bonded DSI mode, the current DRM mode has the complete width of the