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
..
accessibility
acpi
amba
ata
atm	drivers/atm: Adjust confusing if indentation	2010-08-16 21:06:27 -07:00
auxdisplay
base
block
bluetooth
cdrom
char
clocksource
connector
cpufreq
cpuidle
crypto
dca
dio
dma
edac
eisa
firewire	ethtool: Provide a default implementation of ethtool_ops::get_drvinfo	2010-08-17 02:31:15 -07:00
firmware
gpio
gpu
hid
hwmon
i2c
ide
idle
ieee1394	ethtool: Provide a default implementation of ethtool_ops::get_drvinfo	2010-08-17 02:31:15 -07:00
ieee802154
infiniband
input
isdn	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-08-22 22:37:04 -07:00
leds
lguest
macintosh
mca
md
media
memstick
message
mfd
misc
mmc
mtd
net	qlge: Fix a deadlock when the interface is going down	2010-08-25 16:36:51 -07:00
nubus
of
oprofile
parisc
parport
pci
pcmcia
platform
pnp
power
pps
ps3
rapidio
regulator
rtc
s390
sbus
scsi
serial
sfi
sh
sn
spi
ssb
staging
tc
telephony
thermal
uio
usb
uwb
vhost
video
virtio
vlynq
w1
watchdog
xen
zorro
Kconfig
Makefile