lkml.org 
[lkml]   [2006]   [Feb]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] Fixup ahci suspend / resume
Hannes Reinecke wrote:
> Hi all,
>
> the current ahci doesn't handle suspend / resume cycles too well.
> On certain machines the disk just locks up and refuses to work after a
> resume.
>
> This is due to a initialisation error after resume; ahci has fo[u]r
> registers containing DMA addresses (which are obviously allocated by the
> kernel). Of course there is no guarantee that these addresses are
> unchanged across reboots. So ahci loads the suspended image, and after
> the suspended image is started the driver is presented with different
> DMA addresses, whereas the chip still uses the original ones.
>
> This patch rearranges the suspend / resume code to properly initialise
> those registers after a resume. It also contains some initialisation
> fixes to make the driver behave more spec-compliant.
..

Is ahci the *only* interface afflicted with this problem?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-02-28 15:48    [W:0.037 / U:0.392 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site