From: Axel Lin <axel.lin@ingics.com>
Date: Fri, 28 Dec 2012 09:09:03 +0000 (+0800)
Subject: regulator: max8997: Use uV in voltage_map_desc
X-Git-Tag: v3.2.38~103
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31980f8fa9e57f23b301e91dfa79f7f5c517233d;p=pandora-kernel.git

regulator: max8997: Use uV in voltage_map_desc

commit bc3b7756b5ff66828acf7bc24f148d28b8d61108 upstream.

Current code does integer division (min_vol = min_uV / 1000) before pass
min_vol to max8997_get_voltage_proper_val().
So it is possible min_vol is truncated to a smaller value.

For example, if the request min_uV is 800900 for ldo.
min_vol = 800900 / 1000 = 800 (mV)
Then max8997_get_voltage_proper_val returns 800 mV for this case which is lower
than the requested voltage.

Use uV rather than mV in voltage_map_desc to prevent truncation by integer
division.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
[bwh: Backported to 3.2:
 - Adjust context
 - voltage_map_desc also has an n_bits field]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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