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Anton Vorontsov 1b614fb9a0 netpoll: Fix carrier detection for drivers that are using phylib 
Using early netconsole and gianfar driver this error pops up:

  netconsole: timeout waiting for carrier

It appears that net/core/netpoll.c:netpoll_setup() is using
cond_resched() in a loop waiting for a carrier.

The thing is that cond_resched() is a no-op when system_state !=
SYSTEM_RUNNING, and so drivers/net/phy/phy.c's state_queue is never
scheduled, therefore link detection doesn't work.

I belive that the main problem is in cond_resched()[1], but despite
how the cond_resched() story ends, it might be a good idea to call
msleep(1) instead of cond_resched(), as suggested by Andrew Morton.

[1] http://lkml.org/lkml/2009/7/7/463

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2009-07-08 20:09:44 -07:00
..
9p net/9p: Fix crash due to bad mount parameters. 2009-07-02 13:17:01 -07:00
802 net: remove COMPAT_NET_DEV_OPS 2009-05-25 01:53:53 -07:00
8021q 8021q: Vlan driver should use rcu_barrier() on unload instead of syncronize_net() 2009-06-10 01:11:22 -07:00
appletalk net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
atm atm: sk_wmem_alloc initial value is one 2009-06-18 00:29:12 -07:00
ax25 net: Move rx skb_orphan call to where needed 2009-06-23 16:36:25 -07:00
bluetooth net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
bridge bridge: Use rcu_barrier() instead of syncronize_net() on unload. 2009-06-26 13:51:32 -07:00
can can: af_can.c use rcu_barrier() on module unload. 2009-06-10 01:11:24 -07:00
core netpoll: Fix carrier detection for drivers that are using phylib 2009-07-08 20:09:44 -07:00
dcb DCB: fix kfree(skb) 2009-01-04 17:29:21 -08:00
dccp ipv6: Use correct data types for ICMPv6 type and code 2009-06-23 04:31:07 -07:00
decnet decnet: Use rcu_barrier() on module unload. 2009-06-26 13:51:27 -07:00
dsa dsa: fix 88e6xxx statistics counter snapshotting 2009-07-05 18:03:35 -07:00
econet net: sk_wmem_alloc has initial value of one, not zero 2009-06-17 04:31:25 -07:00
ethernet net: remove COMPAT_NET_DEV_OPS 2009-05-25 01:53:53 -07:00
ieee802154 nl802154: add module license and description 2009-06-29 18:20:28 +04:00
ipv4 ipv4: Fix fib_trie rebalancing, part 4 (root thresholds) 2009-07-08 10:46:45 -07:00
ipv6 IPv6: preferred lifetime of address not getting updated 2009-07-03 19:10:13 -07:00
ipx net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
irda net: Move rx skb_orphan call to where needed 2009-06-23 16:36:25 -07:00
iucv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2009-06-22 11:57:09 -07:00
key net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
lapb
…
llc net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
mac80211 mac80211: minstrel: avoid accessing negative indices in rix_to_ndx() 2009-07-07 12:55:28 -04:00
netfilter netfilter: xtables: conntrack match revision 2 2009-06-29 14:31:46 +02:00
netlabel netlabel: Use genl_register_family_with_ops() 2009-05-21 16:50:24 -07:00
netlink net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
netrom net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
packet net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
phonet Phonet: generate Netlink RTM_DELADDR when destroying a device 2009-06-25 02:58:16 -07:00
rds Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-05-18 21:08:20 -07:00
rfkill rfkill: export persistent attribute in sysfs 2009-06-19 11:50:18 -04:00
rose net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
rxrpc RxRPC: Don't attempt to reuse aborted connections 2009-06-16 21:20:14 -07:00
sched net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
sctp sctp: fix warning at inet_sock_destruct() while release sctp socket 2009-07-06 12:47:08 -07:00
sunrpc sunrpc: Use rcu_barrier() on unload. 2009-06-26 13:51:34 -07:00
tipc tipc: Use genl_register_family_with_ops() 2009-05-21 16:50:23 -07:00
unix net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
wanrouter wanrouter: fix sparse warnings: context imbalance 2009-02-26 23:13:36 -08:00
wimax wimax: fix warning caused by not checking retval of rfkill_set_hw_state() 2009-06-11 11:12:48 -07:00
wireless cfg80211: fix refcount leak 2009-07-07 12:55:28 -04:00
x25 net: correct off-by-one write allocations reports 2009-06-18 00:29:12 -07:00
xfrm xfrm: use xfrm_addr_cmp() instead of compare addresses directly 2009-06-29 19:41:46 -07:00
Kconfig net: add IEEE 802.15.4 socket family implementation 2009-06-09 05:25:32 -07:00
Makefile net: add IEEE 802.15.4 socket family implementation 2009-06-09 05:25:32 -07:00
TUNABLE
…
compat.c net: socket infrastructure for SO_TIMESTAMPING 2009-02-15 22:43:35 -08:00
nonet.c
…
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-04-06 18:05:43 -07:00
sysctl_net.c net: sysctl_net - use net_eq to compare nets 2009-03-16 16:23:30 +01:00