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| author | Charles Keepax <ckeepax@opensource.wolfsonmicro.com> | 2016-11-10 10:45:18 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-19 19:18:06 (GMT) |
| commit | 26991b28b47c4a730f08337de557fe4883c44cc2 (patch) | |
| tree | 201364deaf18f19670884faec4eb223ae7260b4e /drivers/regulator | |
| parent | 89c728ed9237748b24456dc8502a6e1577b23105 (diff) | |
| download | linux-26991b28b47c4a730f08337de557fe4883c44cc2.tar.xz | |
regulators: helpers: Fix handling of bypass_val_on in get_bypass_regmap
commit 85b037442e3f0e84296ab1010fd6b057eee18496 upstream.
The handling of bypass_val_on that was added in
regulator_get_bypass_regmap is done unconditionally however
several drivers don't define a value for bypass_val_on. This
results in those drivers reporting bypass being enabled when
it is not. In regulator_set_bypass_regmap we use bypass_mask
if bypass_val_on is zero. This patch adds similar handling in
regulator_get_bypass_regmap.
Fixes: commit dd1a571daee7 ("regulator: helpers: Ensure bypass register field matches ON value")
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/helpers.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/regulator/helpers.c b/drivers/regulator/helpers.c index bcf38fd..379cdac 100644 --- a/drivers/regulator/helpers.c +++ b/drivers/regulator/helpers.c @@ -454,13 +454,17 @@ EXPORT_SYMBOL_GPL(regulator_set_bypass_regmap); int regulator_get_bypass_regmap(struct regulator_dev *rdev, bool *enable) { unsigned int val; + unsigned int val_on = rdev->desc->bypass_val_on; int ret; ret = regmap_read(rdev->regmap, rdev->desc->bypass_reg, &val); if (ret != 0) return ret; - *enable = (val & rdev->desc->bypass_mask) == rdev->desc->bypass_val_on; + if (!val_on) + val_on = rdev->desc->bypass_mask; + + *enable = (val & rdev->desc->bypass_mask) == val_on; return 0; } |