netdev - [PATCH net-next 3/7] net:fec: remove checking for NULL phy_dev in fec_enet

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Message-ID: <1398773350-7293-3-git-send-email-Frank.Li@freescale.com>
Date:	Tue, 29 Apr 2014 20:09:06 +0800
From:	Frank Li <Frank.Li@...escale.com>
To:	<lznuaa@...il.com>, <shawn.guo@...aro.org>, <B38611@...escale.com>,
	<davem@...emloft.net>, <rmk+kernel@....linux.org.uk>
CC:	<linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
	Frank Li <Frank.Li@...escale.com>
Subject: [PATCH net-next 3/7] net:fec: remove checking for NULL phy_dev in fec_enet_close()

From: Russell King <rmk+kernel@....linux.org.uk>

fep->phy_dev can not be NULL here for two reasons:
- fec_enet_open() will have successfully connected the phy, or will have
  failed.
- fec_enet_open() will have called phy_start(fep->phy_dev), which
  unconditionally dereferences this pointer.

If it were to be NULL here, then fec_enet_open() will have already
oopsed.

Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Frank Li <Frank.Li@...escale.com>
---
 drivers/net/ethernet/freescale/fec_main.c |    6 ++----
 1 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 875c0ca..b7a5614 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1798,10 +1798,8 @@ fec_enet_close(struct net_device *ndev)
 	netif_stop_queue(ndev);
 	fec_stop(ndev);
 
-	if (fep->phy_dev) {
-		phy_stop(fep->phy_dev);
-		phy_disconnect(fep->phy_dev);
-	}
+	phy_stop(fep->phy_dev);
+	phy_disconnect(fep->phy_dev);
 
 	fec_enet_free_buffers(ndev);
 
-- 
1.7.8

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