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regmap: Return a sensible error code if we fail to read the cache
authorMark Brown <broonie@opensource.wolfsonmicro.com>
Sun, 9 Oct 2011 12:23:31 +0000 (13:23 +0100)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Mon, 10 Oct 2011 09:24:03 +0000 (10:24 +0100)
If a register isn't cached then let callers know that so they can fall
back or error handle appropriately.

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

No differences found
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