Re: [PATCH 2/3] spi: bitbang: add lsb first support

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

Hi Gerhard,

On Thu, Mar 13, 2014 at 7:11 PM, Gerhard Sittig <gsi@xxxxxxx> wrote:
> http://graphics.stanford.edu/~seander/bithacks.html#BitReverseObvious
> and the following sections suggest that code might get less
> expensive when you accept to no longer see at first glance what's
> happening.  Given a good identifier and an appropriate comment,
> http://graphics.stanford.edu/~seander/bithacks.html#ReverseParallel
> might be acceptable for mainline.

I had faint memories of seeing this algorithm in the Linux kernel sources,
but I can't seem to find it anymore.

We do have a different implementation in lib/bitrev.c.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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