RE: Re: Samsung P35 and S3 suspend

["Li, Shaohua" <shaohua.li-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

>I think this is the patch I sent to this list a few months ago. Here
the
>archive linksfor reference:
>
>http://sourceforge.net/mailarchive/message.php?msg_id=9091506
>
>The background is that any write access to the pci config registers of
some
>devices(sound card, usb 2.0 controler, and modem) cause a system lockup
if
>they are called before acpi_leave_sleep_state and
>acpi_disable_wakeup_device
>were called. This is on an Acer Travelmate 803 Notebook, and it seems
to be
>the same on other systems.
>
>I sent the patch to the list, but it seems that nobody noticed it and I
>forgot
>to send it again. Here is an updated patch against 2.6.10. I can't
promise
>that it doesn't break other systems. Someone should make sure that
>pm_ops->leave is set to NULL for apm. I haven't found this in the apm
code
>yet.
>
And also please try this one (in kernel/power/main.c):
static void suspend_finish(suspend_state_t state)
{
-	device_resume();
	if (pm_ops && pm_ops->finish)
		pm_ops->finish(state);
+	device_resume();
	thaw_processes();
	pm_restore_console();
}
According to ACPI spec, device resume should be after _WAK method (in
acpi_leave_sleep_state)

Thanks,
Shaohua


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