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authorJohn Bonesio <bones@secretlab.ca>2009-10-14 15:10:19 -0700
committerDavid S. Miller <davem@davemloft.net>2009-10-14 15:10:19 -0700
commit37ccd92f55c6c6c23f2b4a7c8830b313b70da0ed (patch)
treec2dd58c451a5923011fbfd1b8beea67b6077f766 /drivers/net/fec_mpc52xx.c
parente72701acbe0b35e52d3f04d442837c06b4e64f1c (diff)
net/fec_mpc52xx: Fix kernel panic on FEC error
The MDIO bus cannot be accessed at interrupt context, but on an FEC error, the fec_mpc52xx driver reset function also tries to reset the PHY. Since the error is detected at IRQ context, and the PHY functions try to sleep, the kernel ends up panicking. Resetting the PHY on an FEC error isn't even necessary. This patch solves the problem by removing the PHY reset entirely. Signed-off-by: John Bonesio <bones@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/fec_mpc52xx.c')
-rw-r--r--drivers/net/fec_mpc52xx.c6
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c
index c40113f5896..66dace6d324 100644
--- a/drivers/net/fec_mpc52xx.c
+++ b/drivers/net/fec_mpc52xx.c
@@ -759,12 +759,6 @@ static void mpc52xx_fec_reset(struct net_device *dev)
mpc52xx_fec_hw_init(dev);
- if (priv->phydev) {
- phy_stop(priv->phydev);
- phy_write(priv->phydev, MII_BMCR, BMCR_RESET);
- phy_start(priv->phydev);
- }
-
bcom_fec_rx_reset(priv->rx_dmatsk);
bcom_fec_tx_reset(priv->tx_dmatsk);