lkml.org 
[lkml]   [2014]   [Mar]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] ARM: machine_power_off should not return
Russell,

Thanks for the reply!

On Mar 26, Russell King - ARM Linux wrote:
> On Tue, Mar 25, 2014 at 07:45:55PM -0300, Ezequiel Garcia wrote:
> >
> > Without this patch we got the heartbeat's reboot_notifier called twice while
> > testing the recent hibernation patches, which was unexpected and produced a
> > kernel panic: https://lkml.org/lkml/2014/3/19/363
>
> I don't see why we should make this change. kernel/reboot.c handles
> this function returning, so other places should do too.
>
> Even on x86, this function can return:
>
[..]
>
> Therefore, I'd say... it's a bug in the hibernation code - or we probably
> have many buggy architectures. I'd suggest fixing the hibernation code
> rather than stuffing some workaround like an endless loop into every
> architecture.
>

Which is exactly what Sebastian did first:

https://lkml.org/lkml/2014/3/20/605

But Pavel asked to fix ARM's machine_power_off instead.

Also, looking at the other architectures, it seems this API is not well
defined: some of them have an infinite loop, some don't. So it's hard to
say the function is supposed to return or not.
--
Ezequiel García, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com
--
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: 2014-03-26 12:01    [W:0.058 / U:19.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site