linux-bl808/drivers/net
Breno Leitao c5dadddb8c qlge: Fix a deadlock when the interface is going down
Currently qlge can deadlock when the interface is going
down, and the mpi_port_cfg_work() is executing on another
processor. It happens because unregister_netdev() holds
the rtnl lock, and the mpi_port_cfg_work() also request
this lock.

Since unregiter_netdev() may wait mpi_port_cfg_work(), who
also request the holding lock, it can cause an deadlock,
displaying the following error:

 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
 rmmod         D 00000080c6c1d190     0  3993   2081 0x00008080
 Call Trace:
 [c000000975f56ee0] [c0000000000152a0] .__switch_to+0x100/0x1d0
 [c000000975f56f70] [c0000000005781b4] .schedule+0x3a4/0x8c0
 [c000000975f570c0] [c000000000578e8c] .schedule_timeout+0x24c/0x350
 [c000000975f571e0] [c000000000578a88] .wait_for_common+0x198/0x210
 [c000000975f572c0] [c0000000000abbb4] .__cancel_work_timer+0x2c4/0x2e0
 [c000000975f57400] [d0000000078e7a20] .ql_adapter_down+0x80/0x260 [qlge]
 [c000000975f574b0] [d0000000078e7d80] .qlge_close+0x70/0x130 [qlge]
 [c000000975f57540] [c000000000497ef8] .__dev_close+0x98/0xf0
 [c000000975f575d0] [c000000000497f74] .dev_close+0x24/0x60
 [c000000975f57650] [c000000000498080] .rollback_registered_many+0xd0/0x2b0
 [c000000975f576f0] [c000000000498338] .rollback_registered+0x38/0x50
 [c000000975f57780] [c0000000004983d8] .unregister_netdevice_queue+0x88/0xe0
 [c000000975f57810] [c000000000498574] .unregister_netdev+0x24/0x40
 [c000000975f57890] [d0000000078f6f38] .qlge_remove+0x3c/0x78 [qlge]
 [c000000975f57920] [c0000000002d9298] .pci_device_remove+0x48/0x90
 [c000000975f579a0] [c000000000372850] .__device_release_driver+0xa0/0x130
 [c000000975f57a30] [c000000000372a08] .driver_detach+0x128/0x150
 [c000000975f57ad0] [c000000000371134] .bus_remove_driver+0xc4/0x1a0
 [c000000975f57b70] [c00000000037357c] .driver_unregister+0x8c/0xd0
 [c000000975f57c00] [c0000000002d968c] .pci_unregister_driver+0x5c/0x110
 [c000000975f57ca0] [d0000000078f6ee4] .qlge_exit+0x1c/0x34 [qlge]

Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com>
Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-08-25 16:36:51 -07:00
..
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irda drivers/net/irda: Eliminate memory leak 2010-08-25 16:36:49 -07:00
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qlge qlge: Fix a deadlock when the interface is going down 2010-08-25 16:36:51 -07:00
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stmmac stmmac: make ioaddr 'void __iomem *' rather than unsigned long 2010-08-25 16:30:51 -07:00
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LICENSE.SRC
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macvtap.c
Makefile
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meth.c
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mii.c
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mv643xx_eth.c
mvme147.c
myri_sbus.c
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natsemi.c
ne-h8300.c
ne.c
ne2.c
ne2k-pci.c
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netconsole.c
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ni52.c
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ni5010.c
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niu.c
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ns83820.c
pasemi_mac.c
pasemi_mac.h
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pci-skeleton.c
pcnet32.c
plip.c plip: remove superflous return 2010-08-25 16:36:48 -07:00
ppp_async.c
ppp_deflate.c
ppp_generic.c
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ppp_synctty.c
pppoe.c
pppox.c
pptp.c
ps3_gelic_net.c
ps3_gelic_net.h
ps3_gelic_wireless.c
ps3_gelic_wireless.h
pxa168_eth.c
qla3xxx.c
qla3xxx.h
r6040.c
r8169.c
rionet.c
rrunner.c
rrunner.h
s2io-regs.h
s2io.c
s2io.h
s6gmac.c
sb1000.c
sb1250-mac.c
sc92031.c
seeq8005.c
seeq8005.h
sgiseeq.c
sgiseeq.h
sh_eth.c
sh_eth.h
sis190.c
sis900.c
sis900.h
skge.c
skge.h
sky2.c
sky2.h
slhc.c
slip.c
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smc-mca.c
smc-ultra.c
smc-ultra32.c
smc91x.c
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smc911x.c
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smc9194.c
smc9194.h
smsc911x.c
smsc911x.h
smsc9420.c
smsc9420.h
sni_82596.c
sonic.c
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Space.c
spider_net.c
spider_net.h
spider_net_ethtool.c
starfire.c
stnic.c
sun3_82586.c
sun3_82586.h
sun3lance.c
sunbmac.c
sunbmac.h
sundance.c
sungem.c
sungem.h
sungem_phy.c
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sunhme.c
sunhme.h
sunlance.c
sunqe.c
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sunvnet.c
sunvnet.h
tc35815.c
tehuti.c
tehuti.h
tg3.c
tg3.h
tlan.c
tlan.h
tsi108_eth.c
tsi108_eth.h
tun.c
typhoon.c typhoon: fix a race in typhoon_do_get_stats 2010-08-25 16:36:49 -07:00
typhoon.h
ucc_geth.c
ucc_geth.h
ucc_geth_ethtool.c
veth.c
via-rhine.c
via-velocity.c
via-velocity.h
virtio_net.c
wd.c
xen-netfront.c
xilinx_emaclite.c
xtsonic.c
yellowfin.c
znet.c
zorro8390.c