diff --git a/drivers/net/niu.c b/drivers/net/niu.c
index f368e74..5b7b31d 100644
--- a/drivers/net/niu.c
+++ b/drivers/net/niu.c
@@ -448,7 +448,7 @@
 	struct niu_link_config *lp = &np->link_config;
 	u16 pll_cfg, pll_sts;
 	int max_retry = 100;
-	u64 sig, mask, val;
+	u64 uninitialized_var(sig), mask, val;
 	u32 tx_cfg, rx_cfg;
 	unsigned long i;
 	int err;
@@ -547,7 +547,7 @@
 	struct niu_link_config *lp = &np->link_config;
 	u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
 	int max_retry = 100;
-	u64 sig, mask, val;
+	u64 uninitialized_var(sig), mask, val;
 	unsigned long i;
 	int err;