Eddy, Benjamin
On Mon, May 23, 2005 at 10:28:36AM +1000, Benjamin Herrenschmidt wrote:
> On Mon, 2005-05-23 at 03:01 +0300, Eddy Petrisor wrote:
> > Hello,
> >
> > I have finaly installed 2.6.12-rc4, but I found that it oopses when
> > comming back from sleep.
> > Any idea why?
> >
> > boring info on:
>
> It's apparently a bug in the USB HID code when CONFIG_USB_SUSPEND is
> enabled, though so far, I haven't got the USB folks to figure out what's
> going on. You should post your report to the linux-usb-devel mailing
> list anyway, maybe that will get them more data on the problem.
Seems this code's not vitally necessary for USB devices: I'm using
2.6.12-rc4 without USB_SUSPEND, and rendering the machine here to
sleep, and waking it up again does not yield any probs with my USB
Logitec mouse, as it seems. That is, the Logitec mouse's seems to be
perfectly back on track after waking up the machine:
$ zcat /proc/config.gz | grep -i USB_SUSPEND
# CONFIG_USB_SUSPEND is not set
# dmesg | grep -i mouse
[17294.335122] ADB mouse at 3, handler set to 4 (trackpad)
[69553.822306] ADB mouse at 3, handler set to 4 (trackpad)
[124667.243642] ADB mouse at 3, handler set to 4 (trackpad)
[126950.822089] ADB mouse at 3, handler set to 4 (trackpad)
[160408.349468] input: USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb-0001:10:18.0-1
[181610.781572] ADB mouse at 3, handler set to 4 (trackpad)
$ cat /proc/cpuinfo
processor : 0
cpu : 7455, altivec supported
clock : 867MHz
revision : 0.2 (pvr 8001 0302)
bogomips : 865.18
machine : PowerBook3,5
motherboard : PowerBook3,5 MacRISC2 MacRISC Power Macintosh
detected as : 80 (PowerBook Titanium IV)
pmac flags : 0000001b
L2 cache : 256K unified
memory : 768MB
pmac-generation : NewWorld
Although I completely agree with people testing unstable code one should not
forget the following information in the corresponding Kconfig:
config USB_SUSPEND
bool "USB suspend/resume (EXPERIMENTAL)"
depends on USB && PM && EXPERIMENTAL
help
If you say Y here, you can use driver calls or the sysfs
"power/state" file to suspend or resume individual USB
peripherals. There are many related features, such as
remote wakeup and driver-specific suspend processing, that
may not yet work as expected.
If you are unsure about this, say N here.
Just in case folks want to get their USB devices up and running for
sleep situations I attach my current config for 2.6.12-rc4-selinux3
(the appended selinux3 only to make clear I enabled selinux for this
kernel. And selinux with this kernel is disabled at boot time as per
default, via this config. As it seems .. :)
More on that in the "2.6.12-rc4 lots faster than any kernel before?"
from a week or so ago ... (BTW: In the meantime I don't think it's
"lots" faster than any kernel before ... :)
HTH
Best Regards
Wolfgang
--
Wolfgang Pfeiffer
http://profiles.yahoo.com/wolfgangpfeiffer
Attachment:
config.gz
Description: /proc/config.gz for 2.6.12-rc4