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| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2013-07-30 11:29:40 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-07-31 01:05:04 +0200 |
| commit | a264b981f2c76e281ef27e7232774bf6c54ec865 (patch) | |
| tree | 1875a691e59369b82ecad4dad563302aadbc1662 /net/key | |
| parent | net_sched: Fix stack info leak in cbq_dump_wrr(). (diff) | |
| download | linux-a264b981f2c76e281ef27e7232774bf6c54ec865.tar.xz linux-a264b981f2c76e281ef27e7232774bf6c54ec865.zip | |
net/fec: Don't let ndo_start_xmit return NETDEV_TX_BUSY without link
Don't test for having link and let hardware deal with this situation.
Without this patch I see a machine running an -rt patched Linux being
stuck in sch_direct_xmit when it looses link while there is still a
packet to be sent. In this case the fec_enet_start_xmit routine returned
NETDEV_TX_BUSY which makes the network stack reschedule the packet and
so sch_direct_xmit calls fec_enet_start_xmit again.
I failed to reproduce a complete hang without -rt, but I think the
problem exists there, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/key')
0 files changed, 0 insertions, 0 deletions