Re: [PATCH] Fixup ahci suspend / resume

[Jeff Garzik <jgarzik@pobox.com>]

Hannes Reinecke wrote:
> From: Hannes Reinecke <hare@suse.de>
> Subject: AHCI suspend / resume fixes.
>
> The current ahci driver has the problem that it doesn't resume properly.
> Or rather, that resuming is unstable.
> Reason being is that AHCI has 4 registers containing the DMA address it
> should write things to. Of course there is no guarantee that Linux has
> assigned the same address to the DMA area across reboots.
> So we should better re-initialize those registers after resume.
>
> The patch also improves the port_start / port_stop routines to be more
> closely modelled after the spec. This also avoids a nasty msleep(500)
> during initialisation.
>
> Signed-off-by: Hannes Reinecke <hare@suse.de>


Seems sane at first glance, but can you please regenerate this against 
libata-dev.git#upstream ?

Upstream 2.6.x doesn't care at all about suspend/resume, and AHCI has 
seen several modifications in #upstream that are waiting for 2.6.17.

	Jeff


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