[Hardy LPIA LUM]: RealTek hda-intel volume remapping for non-linear volume scales

[Andy Whitcroft]

On Tue, Apr 21, 2009 at 04:51:21PM +0100, Colin Ian King wrote:

> It's good to know your eye is keen... 
> 
> The fact is that slave_put_val() requires a master->val to be set for
> the volume to be set correctly (this case a remapped version). However
> master->val can be interrogated later for the master volume setting, and
> we need to return the expected value and not the remapped value else we
> get ALSA confused. Without a major rewrite of slave_put_xval() I cannot
> see around this.

Which lock is protecting master->val for the duration of the update, ie.
while it is holding the bodged value to prevent alsa seeing it?

-apw