lkml.org 
[lkml]   [2014]   [Jun]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH v2 1/6] wdt: sunxi: Move restart code to the watchdog driver
Date
On Monday 23 June 2014 08:16:18 Guenter Roeck wrote:
> > Moved to where?
> >
> > I certainly don't want it in the platform directories, and for arm64 we
> > intentionally don't have a place to put this stuff.
> >
>
> I have no idea, but setting the arm reset function pointer from a watchdog
> driver doesn't seem like a good idea either. The arm code _does_ provide
> and expect platform code to set the reset function, so having it in the arm
> code would at least make more sense than expecting some unrelated driver
> code to set it - especially since it is inherently racy [1].

I don't think the race is inherent. We could solve the multiple registration
problem and the unload problem using a notifier chain. If there are actually
cases where we expect to see multiple reboot functions to be present in the
system, we could go one step further and have a priority associated with
it, so we try the best function first and fall back to soft_restart()
if everything else fails.

Arnd


\
 
 \ /
  Last update: 2014-06-23 18:21    [W:0.074 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site