bq27000: report missing device better.
authorMarek Belisko <marek@goldelico.com>
Mon, 30 Jun 2014 19:49:56 +0000 (21:49 +0200)
committerSebastian Reichel <sre@kernel.org>
Fri, 18 Jul 2014 21:40:22 +0000 (23:40 +0200)
One an hdq buss, a missing device reads as 0xff, not -1.
So do a translation to allow detecting of a missing bus.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

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