netdev - [net-next 08/13] fsl/fman: check pcsphy pointer before use

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Date:   Tue, 4 Oct 2016 10:32:54 +0300
From:   Madalin Bucur <madalin.bucur@....com>
To:     <netdev@...r.kernel.org>
CC:     <davem@...emloft.net>, <linuxppc-dev@...ts.ozlabs.org>,
        <linux-kernel@...r.kernel.org>, <linuxdev.baldrick@...il.com>
Subject: [net-next 08/13] fsl/fman: check pcsphy pointer before use

Signed-off-by: Madalin Bucur <madalin.bucur@....com>
---
 drivers/net/ethernet/freescale/fman/fman_memac.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/freescale/fman/fman_memac.c b/drivers/net/ethernet/freescale/fman/fman_memac.c
index 96dfe7e..53ef51e 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)
-- 
2.1.0