diff --git a/drivers/video/msm/mdss/mdss_mdp.c b/drivers/video/msm/mdss/mdss_mdp.c
index e843a78..fe33331 100644
--- a/drivers/video/msm/mdss/mdss_mdp.c
+++ b/drivers/video/msm/mdss/mdss_mdp.c
@@ -906,7 +906,8 @@
 	int i, total = 0;
 
 	for (i = 0; i < mdata->nctl; i++)
-		total += mdss_debug_stat_ctl_dump(mdata->ctl_off + i, buf, len);
+		total += mdss_debug_stat_ctl_dump(mdata->ctl_off + i,
+			buf + total, len - total);
 
 	total += scnprintf(buf + total, len - total, "\n");