[PATCH] net: stmmac: Fix missing spin_lock_init in visconti_eth_dwmac_probe()

[Wei Yongjun]

The driver allocates the spinlock but not initialize it.
Use spin_lock_init() on it to initialize it correctly.

Fixes: b38dd98ff8d0 ("net: stmmac: Add Toshiba Visconti SoCs glue driver")
Reported-by: Hulk Robot <hulkci at huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1 at huawei.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
index b7a0c57dfbfb..d23be45a64e5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-visconti.c
@@ -218,6 +218,7 @@ static int visconti_eth_dwmac_probe(struct platform_device *pdev)
 		goto remove_config;
 	}
 
+	spin_lock_init(&dwmac->lock);
 	dwmac->reg = stmmac_res.addr;
 	plat_dat->bsp_priv = dwmac;
 	plat_dat->fix_mac_speed = visconti_eth_fix_mac_speed;