Re: usb modules after resuming suspend-to-disk cause kernel oops on iBook

Hello,

Here are some precisions/updates on this problem :

I did some tests with kernel 2.6.21-rc5 compiled with the
configuration presented in the file enclosed (I activated some USB
verbose options). The method used to suspend-to-disk is invoking the
hibernate script with sysfs-disk method.

I do not see a oops, but things seem to go wrong with USB resume.

The modules loaded at boot are:

% lsmod
Module                  Size  Used by
ipv6                  286604  10
lp                     13644  0
parport                43344  1 lp
snd_powermac           48320  0
fuse                   51444  1
dm_snapshot            20448  0
dm_mirror              24404  0
dm_mod                 66700  2 dm_snapshot,dm_mirror
cpufreq_userspace       4756  1
therm_adt746x          13900  0
snd_aoa_codec_tas      15232  2
snd_aoa_fabric_layout    13960  2
snd_aoa                20736  2 snd_aoa_codec_tas,snd_aoa_fabric_layout
joydev                 12064  0
snd_aoa_i2sbus         24516  1
snd_pcm_oss            52256  0
snd_mixer_oss          20608  1 snd_pcm_oss
snd_pcm                92324  3 snd_powermac,snd_aoa_i2sbus,snd_pcm_oss
snd_timer              26052  1 snd_pcm
snd_page_alloc         11368  1 snd_pcm
snd                    67700  13
snd_powermac,snd_aoa_codec_tas,snd_aoa_fabric_layout,snd_aoa,snd_aoa_i2sbus,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
soundcore               9060  1 snd
appletouch             10880  0
snd_aoa_soundbus        8068  2 snd_aoa_fabric_layout,snd_aoa_i2sbus
bcm43xx               441308  0
firmware_class         11360  1 bcm43xx
ieee80211softmac       32128  1 bcm43xx
ieee80211              34920  2 bcm43xx,ieee80211softmac
ieee80211_crypt         6656  1 ieee80211
uninorth_agp           11884  1
agpgart                40476  1 uninorth_agp
tsdev                   9280  0
evdev                  12608  12
ext3                  153544  1
jbd                    68040  1 ext3
mbcache                 9700  1 ext3
sungem                 34628  0
sungem_phy             13024  1 sungem
ehci_hcd               51980  0
usbhid                 47236  0
hid                    62528  1 usbhid
ff_memless              6248  1 usbhid
ide_disk               18944  3
ohci1394               41680  0
ide_cd                 47364  0
cdrom                  43356  1 ide_cd
ieee1394              110928  1 ohci1394
i2c_powermac            6112  0


When I do not unload anything, the system resumes but then seems to
enter into an infinite loop : I cannot interact with the computer.

When I unload the following modules before suspending:
ehci_hcd appletouch usbhid hid ff_memless joydev tsdev sungem
sungem_phy  lp parport bcm43xx ieee80211softmac ieee80211
ieee80211_crypt ohci1394 ieee1394 firmware_class
The system resumes, and I get to a prompt. But I see the following messages:

usb 1-2: USB disconnect address 3
usb usb2: root hub lost power or was reset
usb usb3: root  hub lost power or was reset

I see a long (infinite?) collection of messages in syslogfs:

Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: port 1, status 0105,
change 0000, 12 Mb/s
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: port 1 status 0000.0105
after resume, 0
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: logical disconnect on port 1
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: can't clear suspend on
port 1; -19
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: port 2, status 0105,
change 0000, 12 Mb/s
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: port 2 status 0000.0105
after resume, 0
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: logical disconnect on port 2
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: can't clear suspend on
port 2; -19
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: state 7 ports 2 chg 0006 evt 0000
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: port 1, status 0105,
change 0000, 12 Mb/s
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: port 1 status 0000.0105
after resume, 0
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: logical disconnect on port 1
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: can't clear suspend on
port 1; -19
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: port 2, status 0105,
change 0000, 12 Mb/s
Apr  1 14:18:16 localhost kernel: hub 1-0:1.0: port 2 status 0000.0105
after resume, 0

I can reload all the modules I removed (in inverse order, from the
end) until : usbhid. modprobe usbhid.  'modprobe usbhid' is not
responding, but I still can open another tty and login. Everything
concerning usb has the same behaviour : lsusb,....

I attach also a piece of syslog (first boot, suspend, resume). The
modules are removed, and suspend starts at at 14:16:43.


I hope it enlightens the situation.

Thanks in advance,

Cedric

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