From: Madalin Bucur <madalin.bucur@nxp.com>
Date: Tue, 28 Jun 2016 12:32:44 +0000 (+0300)
Subject: fsl/fman: check pcsphy pointer before use
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=47256192c65b786ea9dbebf47f45b938a02e3914;p=linux-beck.git

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 96dfe7eb4e5f..53ef51e3bd9e 100644
--- 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)