[PATCH] clocksource: arch_timer: Fix code to use physical timers when requested

Sonny Rao sonnyrao at chromium.org
Wed Aug 27 14:27:28 PDT 2014

On Wed, Aug 27, 2014 at 2:19 PM, Olof Johansson <olof at lixom.net> wrote:
> On Wed, Aug 27, 2014 at 2:03 PM, Sonny Rao <sonnyrao at chromium.org> wrote:
>> This is a bug fix for using physical arch timers when
>> the arch_timer_use_virtual boolean is false.  It restores the
>> arch_counter_get_cntpct() function after removal in
>> 0d651e4e "clocksource: arch_timer: use virtual counters"
>> and completes the implementation of memory mapped access for physical
>> timers, so if a system is trying to use physical timers, it will
>> function properly.
>> Signed-off-by: Sonny Rao <sonnyrao at chromium.org>
> Acked-by: Olof Johansson <olof at lixom.net>
> This should have a:
> Fixes: 0d651e4e65e9 ("clocksource: arch_timer: use virtual counters")
> tag too, and possibly cc stable?

Ok, as far as stable goes, this patch wouldn't apply cleanly going all
the way back to  0d651e4e65e9
As-is, it would need to go after 220069945b29 "clocksource:
arch_timer: Add support for memory mapped timers" and there would need
to be another, simpler, version that went between those two commits.

So, I'm not sure what to do in this situation regarding stable?

> -Olof

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