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| author | xypron.glpk@gmx.de <xypron.glpk@gmx.de> | 2016-05-17 21:40:38 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-05-19 11:25:30 -0700 |
| commit | 099a728d5819da80ff9fff3df980ea6e89a01e60 (patch) | |
| tree | d4c7a801bd98437a3e890e3856eba3b21cf44640 /drivers/net/ethernet | |
| parent | 07b75260ebc2c789724c594d7eaf0194fa47b3be (diff) | |
| download | linux-099a728d5819da80ff9fff3df980ea6e89a01e60.tar.gz linux-099a728d5819da80ff9fff3df980ea6e89a01e60.tar.bz2 linux-099a728d5819da80ff9fff3df980ea6e89a01e60.zip | |
net: thunderx: avoid null pointer dereference
In function bgx_lmac_handler only use a member of
lmac after checking it is not null.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c index d20539a6d162..3ed21988626b 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c @@ -274,12 +274,14 @@ static void bgx_sgmii_change_link_state(struct lmac *lmac) static void bgx_lmac_handler(struct net_device *netdev) { struct lmac *lmac = container_of(netdev, struct lmac, netdev); - struct phy_device *phydev = lmac->phydev; + struct phy_device *phydev; int link_changed = 0; if (!lmac) return; + phydev = lmac->phydev; + if (!phydev->link && lmac->last_link) link_changed = -1; |