fsl/fman: check pcsphy pointer before use

Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>

diff --git a/drivers/net/ethernet/freescale/fman/fman_memac.c b/drivers/net/ethernet/freescale/fman/fman_memac.c
index 96dfe7e..53ef51e 100644 (file)
--- a/drivers/net/ethernet/freescale/fman/fman_memac.c
+++ b/drivers/net/ethernet/freescale/fman/fman_memac.c
@@ -507,6 +507,9 @@ static void setup_sgmii_internal_phy(struct fman_mac *memac,
 {
        u16 tmp_reg16;
 
+       if (WARN_ON(!memac->pcsphy))
+               return;
+
        /* SGMII mode */
        tmp_reg16 = IF_MODE_SGMII_EN;
        if (!fixed_link)