[PATCH] alsa/soc: add locking to mpc5200-psc-ac97 driver

[Mark Brown]

On Mon, Jun 29, 2009 at 08:26:12PM -0400, Jon Smirl wrote:

> Does your touchscreen driver use this mutex? Or was this mutex needed
> just for the AC97 driver?

It's in the register accesses so everything accessing the chip registers
will use it.