> > +/* When high resolution timers aren't built-in: we can't use 
> > usleep_range() as
> > + * we would sleep way too long. Use udelay() instead.
> > + */
> > +#define mscc_readl_poll_timeout(addr, val, cond, delay_us, timeout_us)     
> > \
> > +({                                                                 \
> > +   if (!IS_ENABLED(CONFIG_HIGH_RES_TIMERS))                        \
> > +           readl_poll_timeout_atomic(addr, val, cond, delay_us,    \
> > +                                     timeout_us);                  \
> > +   readl_poll_timeout(addr, val, cond, delay_us, timeout_us);      \
> > +})
> > +
> 
> I would make this a regular function which would not harm the compiler's
> ability to optimize it, but would give you type checking. With that fixed:

Hi Florian

cond makes that difficult, since it is not a parameter in the usual
sense, but an expression to evaluate if the polling should terminate.

readl_poll_timeout() and readl_poll_timeout_atomic() themselves are
#define's, and there are more levels of macros under them.

           Andrew

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