tree 78409086ae8f445e6e8ce9e0997df3523a4f647a
parent 0944cc392e9a41dd36b65b2f8cb31dff437a9fdb
author Dimitris Papastamos <dp@opensource.wolfsonmicro.com> 1305809130 +0100
committer Mark Brown <broonie@opensource.wolfsonmicro.com> 1305886926 +0100

ASoC: soc-cache: Cache a pointer to the last accessed rbnode

Whenever we are doing a read or a write through the rbtree code, we'll
cache a pointer to the rbnode.  To avoid looking up the register
everytime we do a read or a write, we first check if it can be found in
the cached register block, otherwise we traverse the rbtree and finally
cache the rbnode for future use.

Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>