diff options
| author | Mike McCormack <mikem@ring3k.org> | 2009-12-31 00:55:31 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-01-06 20:26:14 -0800 |
| commit | c36531b9b2e00d9715c3a0f5788ac5311435e078 (patch) | |
| tree | 54aeae5ce9b08d05370a6c96ddf0f27dadb1452c /drivers/net/sky2.c | |
| parent | c32bbff81c04096c7888aed3946ee90fdbfbc3a3 (diff) | |
sky2: Lock transmit queue while disabling device
netif_device_detach() does not take the tx_lock, so it's possible that
a call to sky2_xmit_frame is still in progress after
netif_device_detach() is complete.
Take netif_tx_lock() to make sure all transmits have stopped while
we're disabling the devices and that no other CPU is still
transmitting a frame after we've disabling the device.
Proposed fix for "sky2 panic under load" reported by Berck E. Nash.
Signed-off-by: Mike McCormack <mikem@ring3k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sky2.c')
| -rw-r--r-- | drivers/net/sky2.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index faa48410195e..8ae8520baaf3 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -3176,7 +3176,9 @@ static void sky2_reset(struct sky2_hw *hw) static void sky2_detach(struct net_device *dev) { if (netif_running(dev)) { + netif_tx_lock(dev); netif_device_detach(dev); /* stop txq */ + netif_tx_unlock(dev); sky2_down(dev); } } |