diff --git a/drivers/gpu/drm/msm/hdmi-staging/sde_hdmi.c b/drivers/gpu/drm/msm/hdmi-staging/sde_hdmi.c
index 5a9e56b58158..d755ba959c20 100644
--- a/drivers/gpu/drm/msm/hdmi-staging/sde_hdmi.c
+++ b/drivers/gpu/drm/msm/hdmi-staging/sde_hdmi.c
@@ -78,7 +78,12 @@ static ssize_t _sde_hdmi_debugfs_dump_info_read(struct file *file,
 	if (!buf)
 		return -ENOMEM;
 
-	len += snprintf(buf, SZ_4K, "name = %s\n", display->name);
+	len += snprintf(buf, SZ_1K, "name = %s\n", display->name);
+
+	if (len > count) {
+		kfree(buf);
+		return -ENOMEM;
+	}
 
 	if (copy_to_user(buff, buf, len)) {
 		kfree(buf);