| commit | df7926fffa9a4c0bceb0189386b4c5edc012fcbb | |
| author | Tim Kryger <tim.kryger@linaro.org> | |
| Thu, 17 Apr 2014 18:55:24 +0000 (17 11:55 -0700) | ||
| committer | Mark Brown <broonie@linaro.org> | |
| Fri, 18 Apr 2014 14:11:54 +0000 (18 15:11 +0100) | ||
| tree | 7c038284799f2ad38d3743e00378d554fe6b7254 | treesnapshot (tar.gz zip) |
| parent | c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 | commitdiff |
regulator: core: Return error in get optional stub
Drivers that call regulator_get_optional are tolerant to the absence of
that regulator. By modifying the value returned from the stub function
to match that seen when a regulator isn't present, callers can wrap the
regulator logic with an IS_ERR based conditional even if they happen to
call regulator_is_supported_voltage. This improves efficiency as well
as eliminates the possibility for a very subtle bug.
Signed-off-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
Drivers that call regulator_get_optional are tolerant to the absence of
that regulator. By modifying the value returned from the stub function
to match that seen when a regulator isn't present, callers can wrap the
regulator logic with an IS_ERR based conditional even if they happen to
call regulator_is_supported_voltage. This improves efficiency as well
as eliminates the possibility for a very subtle bug.
Signed-off-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mark Brown <broonie@linaro.org>
| include/linux/regulator/consumer.h | diffblobblamehistory |