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
..
Makefile
qlge_dbg.c	drivers/net/qlge: Use pr_<level>, shrink text a bit	2010-07-21 14:44:18 -07:00
qlge_ethtool.c	drivers/net: Remove unnecessary returns from void function()s	2010-05-14 00:19:28 -07:00
qlge_main.c	qlge: Fix a deadlock when the interface is going down	2010-08-25 16:36:51 -07:00
qlge_mpi.c	qlge: Don't use firmware when forcing firmware dump.	2010-07-05 19:41:20 -07:00
qlge.h	drivers/net/qlge: Use pr_<level>, shrink text a bit	2010-07-21 14:44:18 -07:00