[alsa-devel] [PATCH] ASoC: prevent compilers from optimising pll calculation into __aeabi__uldivmod

[Mark Brown]

On Wed, Apr 27, 2011 at 04:24:44PM +0800, Barry Song wrote:
> 2011/4/27 Takashi Iwai <tiwai at suse.de>:

> > Don't do this in the low driver level.  If any, we should fix do_div()
> > instead.

> do_div is just a macro, it has no problem by itself. only while
> working together with other more codes before do_div, gcc can make
> some codes merging and cause problems.

> if do_div is a function, we'd just fix it.

It's a macro which expands to a problem so we should make it expand to
something which includes the fix as well rather than going round and
fixing each and every caller.