Hi!
> Yeah, but the interesting one is this pair:
>
> events/0 R running 0 4 1 (L-TLB)
>
> sleep.sh D 0000014F 0 5798 5789 (NOTLB)
> Call Trace:
> [<c01d3c01>] kobject_uevent_env+0x3a1/0x4a0
> [<c02d8509>] wait_for_completion+0x79/0xb0
> [<c0116640>] default_wake_function+0x0/0x10
> [<c0238a08>] _request_firmware+0x1c8/0x310
> [<c0238bef>] request_firmware+0xf/0x20
> [<e0a35d5d>] pcmcia_bus_match+0x28d/0x3c0 [pcmcia]
> [<c02864a7>] netlink_broadcast+0x1f7/0x310
> [<c0233d74>] driver_probe_device+0x34/0xc0
> [<c02d79ee>] klist_next+0x4e/0xa0
> [<c0233014>] bus_for_each_drv+0x44/0x70
> [<c0233eba>] device_attach+0x7a/0x80
> [<c0233e00>] __device_attach+0x0/0x10
> [<c0232f56>] bus_attach_device+0x26/0x60
> [<c0231d06>] device_add+0x5e6/0x6e0
> [<c01d350f>] kobject_init+0x2f/0x50
> [<e0a360f5>] pcmcia_device_add+0x185/0x220 [pcmcia]
> [<e0a36261>] pcmcia_card_add+0xa1/0xc0 [pcmcia]
> [<e0913900>] ti12xx_power_hook+0x180/0x1d0 [yenta_socket]
> [<e0a36300>] ds_event+0x80/0xb0 [pcmcia]
> [<e0967359>] send_event+0x39/0x70 [pcmcia_core]
> [<e09677b6>] socket_insert+0x86/0xe0 [pcmcia_core]
> [<e0967c2b>] pcmcia_socket_dev_resume+0x7b/0x90 [pcmcia_core]
> [<c01e135f>] pci_device_resume+0x1f/0x60
> [<c023815f>] resume_device+0x5f/0xf0
>
> ie we have a deadlock because resume wants to do that firmware request,
> but the event daemon is apparently spinning like mad.
>
> And yes, request_firmware() has a "loading_timeout" in seconds. And
> it's 60. So that explains your pause right there!
If someone does request_firmware from resume function... that's
bad. Resume function should be fixed. Pcmcia? ti12xx driver?
> It might be some unfortunate interaction with process freezing (my
> favorite whipping boy), but it could also be something else. I
> suspect
Well. we'd like to present hardware in working state as soon as we
resume (if eth0 was there before resume, it should be there after
resume. not 3 seconds after resume); so if someone needs to load the
firmware, they should just store it in the kernel memory, and load it
during boot or during (very early) suspend.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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