net: hisilicon: Fix usage of uninitialized variable in function mdio_sc_cfg_reg_write()

[linux-2.6-microblaze.git] / drivers / net / ethernet / hisilicon / hns_mdio.c

diff --git a/drivers/net/ethernet/hisilicon/hns_mdio.c b/drivers/net/ethernet/hisilicon/hns_mdio.c
index 3e863a7..7df5d7d 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns_mdio.c
+++ b/drivers/net/ethernet/hisilicon/hns_mdio.c
@@ -148,11 +148,15 @@ static int mdio_sc_cfg_reg_write(struct hns_mdio_device *mdio_dev,
 {
        u32 time_cnt;
        u32 reg_value;
+       int ret;
 
        regmap_write(mdio_dev->subctrl_vbase, cfg_reg, set_val);
 
        for (time_cnt = MDIO_TIMEOUT; time_cnt; time_cnt--) {
-               regmap_read(mdio_dev->subctrl_vbase, st_reg, &reg_value);
+               ret = regmap_read(mdio_dev->subctrl_vbase, st_reg, &reg_value);
+               if (ret)
+                       return ret;
+
                reg_value &= st_msk;
                if ((!!check_st) == (!!reg_value))
                        break;