[PATCH net] net: broadcom/bcmsysport: Fix signedness in bcm_sysport_probe()

[Dan Carpenter]

The "priv->phy_interface" variable is an enum and in this context GCC
will treat it as unsigned so the error handling will never be
triggered.

Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC 
driver")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
 drivers/net/ethernet/broadcom/bcmsysport.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c 
b/drivers/net/ethernet/broadcom/bcmsysport.c
index 7df887e4024c..a977a459bd20 100644
--- a/drivers/net/ethernet/broadcom/bcmsysport.c
+++ b/drivers/net/ethernet/broadcom/bcmsysport.c
@@ -2481,7 +2481,7 @@ static int bcm_sysport_probe(struct platform_device *pdev)
 
        priv->phy_interface = of_get_phy_mode(dn);
        /* Default to GMII interface mode */
-       if (priv->phy_interface < 0)
+       if ((int)priv->phy_interface < 0)
                priv->phy_interface = PHY_INTERFACE_MODE_GMII;
 
        /* In the case of a fixed PHY, the DT node associated
-- 
2.20.1