Re: Re: [Ipw2100-devel] [susp-resume] ipw2100 suspend patch for 0.54 (version 3)

[Karol Kozimor <sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org>]

Thus wrote Luca Capello:
> I can *successfully* suspend/resume with the 2 calls (/proc or /sys),
> directly from XFree86 and with all the modules loaded. As already
> reported, the only difference is that with the /sys call, in suspending
> I've always the machine which powers off, while with the /proc call I
> should power off the machine by pressing 4-sec the power button.
> 
> Simple question: which should be the best method to use? /sys or /proc?

Use /sys if it works. OTOH, /proc is more tested and actively maintained.
ACPI S4 triggered by /sys is slightly better in handling wake-up events
(think Wake On LAN, RTC) and other things like, say AC status updates.

> Another thing: why for the /sys call I should use 'append=noresume',
> while I want to *resume*? I mean, it's not so clear...

Because /sys is the pmdisk code, /proc is swsusp1 code (at least until the
merge in -mm kernels goes into mainline). swsusp1 uses resume and noresume,
pmdisk uses pmdisk (=/dev/hdXY) and, well... AFAIR pmdisk (="").
Best regards,

-- 
Karol 'sziwan' Kozimor
sziwan-DETuoxkZsSqrDJvtcaxF/A@public.gmane.org


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