lkml.org 
[lkml]   [2005]   [Apr]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] PCI: Add pci shutdown ability
On Mon, Apr 25, 2005 at 10:42:07PM +0200, Pavel Machek wrote:
> Hi!
>
> > Well it seems that people are starting to want to hook the reboot
> > notifier, or the device shutdown facility in order to properly shutdown
> > pci drivers to make kexec work nicer.
> >
> > So here's a patch for the PCI core that allows pci drivers to now just
> > add a "shutdown" notifier function that will be called when the system
> > is being shutdown. It happens just after the reboot notifier happens,
> > and it should happen in the proper device tree order, so everyone should
> > be happy.
> >
> > Any objections to this patch?
>
> Yes.
>
> I believe it should just do suspend(PMSG_SUSPEND) before system
> shutdown. If you think distintion between shutdown and suspend is
> important (I am not 100% convinced it is), we can just add flag
> saying "this is system shutdown".

So if I understand this correctly, you'd like to manually turn off devices
during a power off. I believe the ACPI spec recommends this for S4 (but also
to leave on wake devices), but not necessarily S5. Still it may be a good
idea. Comments?

>
> Actually this patch should be in the queue somewhere... We had it in
> suse trees for a long time, and IMO it can solve problem easily.

Yeah, that's what I had in mind when I mentioned PMSG_FREEZE. It seems
to replace "shutdown" in many ways, is this correct?

Thanks,
Adam
-
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: 2005-04-25 23:03    [from the cache]
©2003-2011 Jasper Spaans. Advertise on this site