[PATCH] timecounters: Fix timehand generation read/write

[Sebastian Huber]

In my interpretation of the C standard this is implementation defined behaviour.  See also:

https://gcc.gnu.org/onlinedocs/gcc/Volatiles.html

----- Joerg Sonnenberger <joerg at britannica.bec.de> schrieb:
> On Wed, Jun 03, 2015 at 01:46:06PM +0200, Sebastian Huber wrote:
> > The compiler is free to re-order load/store instructions to non-volatile
> > variables around a load/store of a volatile variable.
> 
> This part is wrong. The *compiler* is not free to do such reorder. The
> CPU may, as it doesn't really care about volatile.
> 
> Joerg
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