[alsa-devel] [PATCH] wss_lib: do not mess mixer settings during probe

[Takashi Iwai]

At Mon, 25 Aug 2008 00:37:52 +0200,
Rene Herman wrote:
> 
> On 24-08-08 21:48, Krzysztof Helt wrote:
> 
> >From the Documentation/memory-barriers.txt
> > "
> > (*) inX(), outX():
> > ...
> >     They are guaranteed to be fully ordered with respect to each other.
> > 
> >     They are not guaranteed to be fully ordered with respect to other types of
> >      memory and I/O operation.
> > ...
> > "
> > 
> > No barriers are needed in this case. 
> 
> On x86 certainly not and I would expect these barriers are there for 
> cases/architectures where inb() and outb() are redefined to memory 
> mapped I/O or there would just be no point at all.

These barriers are mostly for Alpha.  Not sure whether they are really
needed, though.


Takashi