lkml.org 
[lkml]   [2004]   [Aug]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [RFC] Fix Device Power Management States
Date
From
Patrick Mochel <mochel@digitalimplant.org> wrote:

> Ok, the patch below attempts to fix up the device power management
> handling, taking into account (hopefully) everything that has been said
> over the last week+, and lessons learned over the years. It's only been
> compile-tested, and is meant just to prove that the framework is possible.
> There are likely to be some missing pieces, mainly because it's late. :)

At the moment I'm struggling with the fact that the order of resumption
of system devices appears significant (ie, I get hangs on resume with
the stock kernel, but changing the list_for_each_entry in sysdev_resume
to list_for_each_entry_reverse makes things work) but there doesn't seem
to be any mechanism for providing proper ordering when there isn't a
tree structure. This also crops up with resuming my wireless hardware -
it tries to do a hotplug firmware load, but the IDE bus hasn't been
woken up yet.

Do we need a more fine-grained dependency structure than the current
tree?

--
Matthew Garrett | mjg59-chiark.mail.linux-rutgers.kernel@srcf.ucam.org
-
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: 2005-03-22 14:05    [W:0.271 / U:1.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site