[PATCH] ARM: ep93xx: Fix clocksource registration

[Russell King - ARM Linux]

On Tue, Dec 01, 2015 at 11:14:02AM +0100, Alexander Sverdlin wrote:
> Hello Linus,
> 
> On 01/12/15 11:09, Linus Walleij wrote:
> >> clocksource_mmio_init() explicitly checks for counter's width and refuses to
> >> > register anything with resolution higher than 32 bits. We need to use
> >> > clocksource_register_hz() directly to repair HIGH_RES_TIMERS.
> > Maybe tglx want to jump in on this.
> > 
> > Isn't it better to fix clocksource_mmio_init() to accept > 32 bits?
> > 
> > What is really prompting this in drivers/clocksource/mmio.c:
> > 
> > if (bits > 32 || bits < 16)
> >                 return -EINVAL;
> 
> probably lack of >32bit access functions in the driver. But I do not know
> the original intentions of the author. In any case, if we modify the check here,
> probably the access function for 64 bits should be moved to the mmio.c?

If people want to use it with 64-bit accessors, then yes.  So says
the author of that file (me).

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