regmap: debugfs: Fix attempts to read nonexistant register blocks
authorMark Brown <broonie@opensource.wolfsonmicro.com>
Wed, 2 Jan 2013 15:32:00 +0000 (15:32 +0000)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Tue, 8 Jan 2013 20:52:45 +0000 (20:52 +0000)
Return the start of the last block we tried to read rather than a position,
and also make sure we update the byte position while we're at it.  Without
this reads that go into nonexistant areas get confused.

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

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