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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2013-06-21 08:30:22 +0200
committerMark Brown <broonie@linaro.org>2013-06-21 11:00:54 +0100
commitdb892ff6c0f49708f13d9dff3957034f2f90e1c1 (patch)
tree2e3a95dd097cb177b296daa786a9d4fbbe9a09d1 /drivers/regulator
parent7d132055814ef17a6c7b69f342244c410a5e000f (diff)
downloadlinux-db892ff6c0f49708f13d9dff3957034f2f90e1c1.tar.bz2
regulators: max8973: fix multiple instance support
Currently the max8973 regulator driver uses a single static struct of regulator operations for all chip instances, but can overwrite some of its members depending on configuration. This will affect all other MAX8973 instances on the system. This patch fixes this bug by allocating a separate copy of the struct for each chip instance. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/max8973-regulator.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/regulator/max8973-regulator.c b/drivers/regulator/max8973-regulator.c
index adb1414e5e37..b2dbdd70cab1 100644
--- a/drivers/regulator/max8973-regulator.c
+++ b/drivers/regulator/max8973-regulator.c
@@ -100,6 +100,7 @@ struct max8973_chip {
int curr_vout_reg;
int curr_gpio_val;
bool valid_dvs_gpio;
+ struct regulator_ops ops;
};
/*
@@ -240,7 +241,7 @@ static unsigned int max8973_dcdc_get_mode(struct regulator_dev *rdev)
REGULATOR_MODE_FAST : REGULATOR_MODE_NORMAL;
}
-static struct regulator_ops max8973_dcdc_ops = {
+static const struct regulator_ops max8973_dcdc_ops = {
.get_voltage_sel = max8973_dcdc_get_voltage_sel,
.set_voltage_sel = max8973_dcdc_set_voltage_sel,
.list_voltage = regulator_list_voltage_linear,
@@ -388,10 +389,11 @@ static int max8973_probe(struct i2c_client *client,
}
i2c_set_clientdata(client, max);
+ max->ops = max8973_dcdc_ops;
max->dev = &client->dev;
max->desc.name = id->name;
max->desc.id = 0;
- max->desc.ops = &max8973_dcdc_ops;
+ max->desc.ops = &max->ops;
max->desc.type = REGULATOR_VOLTAGE;
max->desc.owner = THIS_MODULE;
max->desc.min_uV = MAX8973_MIN_VOLATGE;
@@ -401,9 +403,9 @@ static int max8973_probe(struct i2c_client *client,
if (!pdata->enable_ext_control) {
max->desc.enable_reg = MAX8973_VOUT;
max->desc.enable_mask = MAX8973_VOUT_ENABLE;
- max8973_dcdc_ops.enable = regulator_enable_regmap;
- max8973_dcdc_ops.disable = regulator_disable_regmap;
- max8973_dcdc_ops.is_enabled = regulator_is_enabled_regmap;
+ max->ops.enable = regulator_enable_regmap;
+ max->ops.disable = regulator_disable_regmap;
+ max->ops.is_enabled = regulator_is_enabled_regmap;
}
max->enable_external_control = pdata->enable_ext_control;