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| author |   Ben Hutchings <ben@decadent.org.uk> | 2009-12-14 16:05:09 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-01-03 21:18:40 -0800 |
| commit | 35bb5cadc8c7b1462df57e32e08d964f1be7a75c (patch) | |
| tree | bc8c8182bfba02caaf3f571e22dfc5581f2d0aa8 /drivers/net/via-velocity.c | |
| parent | fsl_pq_mdio: Fix iomem unmapping for non-eTSEC2.0 controllers (diff) | |
| download | linux-dev-35bb5cadc8c7b1462df57e32e08d964f1be7a75c.tar.xz linux-dev-35bb5cadc8c7b1462df57e32e08d964f1be7a75c.zip | |
via-velocity: Give RX descriptors to the NIC later on open or MTU change
velocity_open() calls velocity_give_many_rx_descs(), which gives RX
descriptors to the NIC, before installing an interrupt handler or
calling velocity_init_registers(). I think this is very unsafe and it
appears to explain the bug report <http://bugs.debian.org/508527>.
On MTU change, velocity_give_many_rx_descs() is again called before
velocity_init_registers(). I'm not sure whether this is unsafe but
it does look wrong.
Therefore, move the calls to velocity_give_many_rx_descs() after
request_irq() and velocity_init_registers().
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Tested-by: Jan Ceuleers <jan.ceuleers@computer.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/via-velocity.c')
| -rw-r--r-- | drivers/net/via-velocity.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c index 4ceb441f2687..c93f58f5c6f2 100644 --- a/drivers/net/via-velocity.c +++ b/drivers/net/via-velocity.c @@ -2237,8 +2237,6 @@ static int velocity_open(struct net_device *dev) /* Ensure chip is running */ pci_set_power_state(vptr->pdev, PCI_D0); - velocity_give_many_rx_descs(vptr); - velocity_init_registers(vptr, VELOCITY_INIT_COLD); ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED, @@ -2250,6 +2248,8 @@ static int velocity_open(struct net_device *dev) goto out; } + velocity_give_many_rx_descs(vptr); + mac_enable_int(vptr->mac_regs); netif_start_queue(dev); napi_enable(&vptr->napi); @@ -2339,10 +2339,10 @@ static int velocity_change_mtu(struct net_device *dev, int new_mtu) dev->mtu = new_mtu; - velocity_give_many_rx_descs(vptr); - velocity_init_registers(vptr, VELOCITY_INIT_COLD); + velocity_give_many_rx_descs(vptr); + mac_enable_int(vptr->mac_regs); netif_start_queue(dev); |