regulator: core: Use a struct to pass in regulator runtime configuration

Rather than adding new arguments to regulator_register() every time we
want to add a new bit of dynamic information at runtime change the function
to take these via a struct. By doing this we avoid needing to do further
changes like the recent addition of device tree support which required each
regulator driver to be updated to take an additional parameter.

The regulator_desc which should (mostly) be static data is still passed
separately as most drivers are able to configure this statically at build
time.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/regulator/isl6271a-regulator.c b/drivers/regulator/isl6271a-regulator.c
index eee6f6b85ebc..863f45a18c30 100644
--- a/drivers/regulator/isl6271a-regulator.c
+++ b/drivers/regulator/isl6271a-regulator.c
@@ -140,6 +140,7 @@ static const struct regulator_desc isl_rd[] = {
 static int __devinit isl6271a_probe(struct i2c_client *i2c,
                                      const struct i2c_device_id *id)
 {
+        struct regulator_config config = { };
         struct regulator_init_data *init_data   = i2c->dev.platform_data;
         struct isl_pmic *pmic;
         int err, i;
@@ -156,8 +157,14 @@ static int __devinit isl6271a_probe(struct i2c_client *i2c,
         mutex_init(&pmic->mtx);
 
         for (i = 0; i < 3; i++) {
-                pmic->rdev[i] = regulator_register(&isl_rd[i], &i2c->dev,
-                                                init_data, pmic, NULL);
+                config.dev = &i2c->dev;
+                if (i == 0)
+                        config.init_data = init_data;
+                else
+                        config.init_data = 0;
+                config.driver_data = pmic;
+
+                pmic->rdev[i] = regulator_register(&isl_rd[i], &config);
                 if (IS_ERR(pmic->rdev[i])) {
                         dev_err(&i2c->dev, "failed to register %s\n", id->name);
                         err = PTR_ERR(pmic->rdev[i]);