[RFC PATCH 04/12] arm: mm: cache-l2x0: add l2x0 suspend and resume functions

Pavel Machek pavel at ucw.cz
Fri Jan 29 01:49:21 EST 2010


On Thu 2010-01-28 14:59:29, Daniel Walker wrote:
> From: Willie Ruan <wruan at quicinc.com>
> 
> The application processor in Qualcomm's MSM chips can be powered off
> (also called power collapse) during suspend and idle time. L2 cache power
> will be collapsed too on current chips. To handle this scenario, we need
> to add a function (l2x0_suspend here) to flush L2 cache before the power
> loss and another function (l2x0_resume) to restore the cache settings
> after the power is restored.

So this fixes suspend/resume? Ack...

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html



More information about the linux-arm-kernel mailing list