Re: [PATCH] ARC: Fix __udelay parentheses

[Joe Perches]

On Thu, 2013-08-29 at 05:55 +0000, Vineet Gupta wrote:

> The intent of writing orig code was to generate only 1 MPYHU insn (32*32 =
> high-part-64) for the whole math, at any optimization level whatsoever. If the
> first MPY is overflowing, u r likely spinning for > 10,000 usec (10ms) which is 1
> scheduling tick on ARC - not good - presumably for hardware debug. It would be
> better to use a tight loop there and throw it out later.

It's a delay loop.  Does it matter whether
or not a multiply or division is used?


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