[alsa-devel] [PATCH 2/2] sis7019: add support for pre-2.6 kernels

Takashi Iwai tiwai at suse.de
Wed Nov 28 13:56:03 CET 2007

At Wed, 28 Nov 2007 08:18:57 -0500,
Dave Dillow wrote:
> > Also, replace __ffs() only for 2.4 kernels, e.g.
> I'm 50/50 on this -- it doesn't hurt to just use the patched in version,
> even in 2.6. I'm not fond of #ifdefs in code, and I'd need to search for
> when it became available.

But a different code would be compiled even for the same kernel and
with the same config, between alsa-driver and kernel builds.
That's what I'd like to avoid.

> Then again, it is a small patch and the research isn't hard, just a bit
> time consuming.

__ffs() is present on all 2.6 versions.  So, >= 2.6.0 should be OK.



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