[PATCH 1/2] net: phy: Add error checks in the driver

[Kedareswara rao Appana]

This patch adds the necessary error checks in the driver.

Reported-by: Andrew Lunn <and...@lunn.ch>
Signed-off-by: Kedareswara rao Appana <appa...@xilinx.com>
---
 drivers/net/phy/xilinx_gmii2rgmii.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/xilinx_gmii2rgmii.c 
b/drivers/net/phy/xilinx_gmii2rgmii.c
index e7a20ec..7336fd0 100644
--- a/drivers/net/phy/xilinx_gmii2rgmii.c
+++ b/drivers/net/phy/xilinx_gmii2rgmii.c
@@ -39,11 +39,16 @@ struct gmii2rgmii {
 static int xgmiitorgmii_read_status(struct phy_device *phydev)
 {
        struct gmii2rgmii *priv = phydev->priv;
-       u16 val = 0;
+       int err, val = 0;
 
-       priv->phy_drv->read_status(phydev);
+       err = priv->phy_drv->read_status(phydev);
+       if (err < 0)
+               return err;
 
        val = mdiobus_read(phydev->mdio.bus, priv->addr, XILINX_GMII2RGMII_REG);
+       if (val < 0)
+               return val;
+
        val &= XILINX_GMII2RGMII_SPEED_MASK;
 
        if (phydev->speed == SPEED_1000)
@@ -53,7 +58,10 @@ static int xgmiitorgmii_read_status(struct phy_device 
*phydev)
        else
                val |= BMCR_SPEED10;
 
-       mdiobus_write(phydev->mdio.bus, priv->addr, XILINX_GMII2RGMII_REG, val);
+       err = mdiobus_write(phydev->mdio.bus, priv->addr, XILINX_GMII2RGMII_REG,
+                           val);
+       if (err < 0)
+               return err;
 
        return 0;
 }
-- 
2.1.2