We can reduce boilerplate code by using devm_regulator_get_enable_read_voltage(). Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Acked-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> Signed-off-by: David Lechner <dlechner@xxxxxxxxxxxx> --- This is left over from [1] and never got picked up, so resubmitting. v3: changes picked up Dmitry's Ack and rebased on linux-next. [1]: https://lore.kernel.org/all/20240429-regulator-get-enable-get-votlage-v2-7-b1f11ab766c1@xxxxxxxxxxxx/ --- drivers/input/keyboard/mpr121_touchkey.c | 45 +++----------------------------- 1 file changed, 3 insertions(+), 42 deletions(-) diff --git a/drivers/input/keyboard/mpr121_touchkey.c b/drivers/input/keyboard/mpr121_touchkey.c index 21827d2497fa..bd1a944ded46 100644 --- a/drivers/input/keyboard/mpr121_touchkey.c +++ b/drivers/input/keyboard/mpr121_touchkey.c @@ -82,42 +82,6 @@ static const struct mpr121_init_register init_reg_table[] = { { AUTO_CONFIG_CTRL_ADDR, 0x0b }, }; -static void mpr121_vdd_supply_disable(void *data) -{ - struct regulator *vdd_supply = data; - - regulator_disable(vdd_supply); -} - -static struct regulator *mpr121_vdd_supply_init(struct device *dev) -{ - struct regulator *vdd_supply; - int err; - - vdd_supply = devm_regulator_get(dev, "vdd"); - if (IS_ERR(vdd_supply)) { - dev_err(dev, "failed to get vdd regulator: %ld\n", - PTR_ERR(vdd_supply)); - return vdd_supply; - } - - err = regulator_enable(vdd_supply); - if (err) { - dev_err(dev, "failed to enable vdd regulator: %d\n", err); - return ERR_PTR(err); - } - - err = devm_add_action_or_reset(dev, mpr121_vdd_supply_disable, - vdd_supply); - if (err) { - dev_err(dev, "failed to add disable regulator action: %d\n", - err); - return ERR_PTR(err); - } - - return vdd_supply; -} - static void mpr_touchkey_report(struct input_dev *dev) { struct mpr121_touchkey *mpr121 = input_get_drvdata(dev); @@ -233,7 +197,6 @@ static int mpr121_phys_init(struct mpr121_touchkey *mpr121, static int mpr_touchkey_probe(struct i2c_client *client) { struct device *dev = &client->dev; - struct regulator *vdd_supply; int vdd_uv; struct mpr121_touchkey *mpr121; struct input_dev *input_dev; @@ -241,11 +204,9 @@ static int mpr_touchkey_probe(struct i2c_client *client) int error; int i; - vdd_supply = mpr121_vdd_supply_init(dev); - if (IS_ERR(vdd_supply)) - return PTR_ERR(vdd_supply); - - vdd_uv = regulator_get_voltage(vdd_supply); + vdd_uv = devm_regulator_get_enable_read_voltage(dev, "vdd"); + if (vdd_uv < 0) + return dev_err_probe(dev, vdd_uv, "failed to get vdd voltage\n"); mpr121 = devm_kzalloc(dev, sizeof(*mpr121), GFP_KERNEL); if (!mpr121) --- base-commit: 414c97c966b69e4a6ea7b32970fa166b2f9b9ef0 change-id: 20241119-input-mpr121-regulator-get-enable-read-voltage-4342a6afb4f2 Best regards, -- David Lechner <dlechner@xxxxxxxxxxxx>
