linux-kernel - Re: [patch] PM: suspend/resume debugging should depend on SOFTWARE

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Message-id: <45693E25.9010504@shaw.ca>
Date:	Sun, 26 Nov 2006 01:11:33 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	linux-kernel <linux-kernel@...r.kernel.org>
Cc:	Alan <alan@...rguk.ukuu.org.uk>, Pavel Machek <pavel@....cz>
Subject: Re: [patch] PM: suspend/resume debugging should depend on
 SOFTWARE_SUSPEND

Alan wrote:
> Lots of other controllers don't work correctly on resume but thats much
> less of a problem and with UDMA misclocking generally turns into a CRC
> error storm and stop.
> 
> Andrew has about 2/3rds of the bits I've done now, will push the rest
> when I've done a little more testing/checking. At that point libata ought
> to be resume safe. Someone who cares about drivers/ide legacy support can
> then copy the work over.

btw, I have some code almost ready for sata_nv to add proper 
suspend/resume support. Unfortunately I have trouble testing it, since 
STR doesn't work on my machine since, guess what - the video doesn't 
come back! It doesn't even take the monitor out of standby mode. None of 
the acpi_sleep options seem to work, and vbetool appears to helpfully 
segfault on any operation so that's out. This is an NVIDIA SLI setup so 
that probably makes things a bit more complicated.

In any case, it should be better than what we have right now for 
suspend/resume support in sata_nv, namely the "do nothing, won't work 
(at least not for CK804 and later)" implementation..

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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