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

On Wed, Apr 27, 2011 at 04:50:12PM +0800, Barry Song wrote:

Marking pll_factors() as noinline or putting asm("" : "+r"(source)); before the call to do_div() works around the problem.

If we do have to do something in the callers rather than in do_div() the annotation seems substantially more taseful than inserting a random asm into the code.