From fe4fda5d8f28d06ae8f1482f4bde8a83be16e44b Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Mon, 3 Oct 2011 22:36:57 +0100
Subject: [PATCH] ASoC: Reduce the number of neigbours we mark dirty when
 updating power

If two widgets are not currently connected then there is no need to
propagate a power state change between them as we mark the affected
widgets when we change a connection. Similarly if a neighbour widget is
already in the state being set for the current widget then there is no
need to recheck.

On one system I tested this gave:

           Power    Path   Neighbour
Before:    114      1066   1327
After:     106      970    1186

which is an improvement, although relatively small.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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