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Commit 4fca9545 authored by David Brownell's avatar David Brownell Committed by Liam Girdwood
Browse files

regulator: code shrink (v2) 



Shrink regulator core by removing duplication in attribute printing
and probe() cleanup paths.  Saves about 340 bytes (object) on ARM.

Signed-off-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarLiam Girdwood <lrg@slimlogic.co.uk>
parent e573520b

drivers/regulator/core.c

+44 −67
Original line number Diff line number Diff line
@@ -267,12 +267,8 @@ static ssize_t regulator_name_show(struct device *dev, 
	return sprintf(buf, "%s\n", name);

}



static ssize_t regulator_opmode_show(struct device *dev,

				    struct device_attribute *attr, char *buf)

static ssize_t regulator_print_opmode(char *buf, int mode)

{

	struct regulator_dev *rdev = dev_get_drvdata(dev);

	int mode = _regulator_get_mode(rdev);



	switch (mode) {

	case REGULATOR_MODE_FAST:

		return sprintf(buf, "fast\n");
@@ -286,12 +282,16 @@ static ssize_t regulator_opmode_show(struct device *dev, 
	return sprintf(buf, "unknown\n");

}



static ssize_t regulator_state_show(struct device *dev,

static ssize_t regulator_opmode_show(struct device *dev,

				    struct device_attribute *attr, char *buf)

{

	struct regulator_dev *rdev = dev_get_drvdata(dev);

	int state = _regulator_is_enabled(rdev);



	return regulator_print_opmode(buf, _regulator_get_mode(rdev));

}



static ssize_t regulator_print_state(char *buf, int state)

{

	if (state > 0)

		return sprintf(buf, "enabled\n");

	else if (state == 0)
@@ -300,6 +300,14 @@ static ssize_t regulator_state_show(struct device *dev, 
		return sprintf(buf, "unknown\n");

}



static ssize_t regulator_state_show(struct device *dev,

				   struct device_attribute *attr, char *buf)

{

	struct regulator_dev *rdev = dev_get_drvdata(dev);



	return regulator_print_state(buf, _regulator_is_enabled(rdev));

}



static ssize_t regulator_min_uA_show(struct device *dev,

				    struct device_attribute *attr, char *buf)

{
@@ -409,22 +417,6 @@ static ssize_t regulator_suspend_standby_uV_show(struct device *dev, 
	return sprintf(buf, "%d\n", rdev->constraints->state_standby.uV);

}



static ssize_t suspend_opmode_show(struct regulator_dev *rdev,

	unsigned int mode, char *buf)

{

	switch (mode) {

	case REGULATOR_MODE_FAST:

		return sprintf(buf, "fast\n");

	case REGULATOR_MODE_NORMAL:

		return sprintf(buf, "normal\n");

	case REGULATOR_MODE_IDLE:

		return sprintf(buf, "idle\n");

	case REGULATOR_MODE_STANDBY:

		return sprintf(buf, "standby\n");

	}

	return sprintf(buf, "unknown\n");

}



static ssize_t regulator_suspend_mem_mode_show(struct device *dev,

				struct device_attribute *attr, char *buf)

{
@@ -432,8 +424,8 @@ static ssize_t regulator_suspend_mem_mode_show(struct device *dev, 


	if (!rdev->constraints)

		return sprintf(buf, "not defined\n");

	return suspend_opmode_show(rdev,

		rdev->constraints->state_mem.mode, buf);

	return regulator_print_opmode(buf,

		rdev->constraints->state_mem.mode);

}



static ssize_t regulator_suspend_disk_mode_show(struct device *dev,
@@ -443,8 +435,8 @@ static ssize_t regulator_suspend_disk_mode_show(struct device *dev, 


	if (!rdev->constraints)

		return sprintf(buf, "not defined\n");

	return suspend_opmode_show(rdev,

		rdev->constraints->state_disk.mode, buf);

	return regulator_print_opmode(buf,

		rdev->constraints->state_disk.mode);

}



static ssize_t regulator_suspend_standby_mode_show(struct device *dev,
@@ -454,8 +446,8 @@ static ssize_t regulator_suspend_standby_mode_show(struct device *dev, 


	if (!rdev->constraints)

		return sprintf(buf, "not defined\n");

	return suspend_opmode_show(rdev,

		rdev->constraints->state_standby.mode, buf);

	return regulator_print_opmode(buf,

		rdev->constraints->state_standby.mode);

}



static ssize_t regulator_suspend_mem_state_show(struct device *dev,
@@ -466,10 +458,8 @@ static ssize_t regulator_suspend_mem_state_show(struct device *dev, 
	if (!rdev->constraints)

		return sprintf(buf, "not defined\n");



	if (rdev->constraints->state_mem.enabled)

		return sprintf(buf, "enabled\n");

	else

		return sprintf(buf, "disabled\n");

	return regulator_print_state(buf,

			rdev->constraints->state_mem.enabled);

}



static ssize_t regulator_suspend_disk_state_show(struct device *dev,
@@ -480,10 +470,8 @@ static ssize_t regulator_suspend_disk_state_show(struct device *dev, 
	if (!rdev->constraints)

		return sprintf(buf, "not defined\n");



	if (rdev->constraints->state_disk.enabled)

		return sprintf(buf, "enabled\n");

	else

		return sprintf(buf, "disabled\n");

	return regulator_print_state(buf,

			rdev->constraints->state_disk.enabled);

}



static ssize_t regulator_suspend_standby_state_show(struct device *dev,
@@ -494,10 +482,8 @@ static ssize_t regulator_suspend_standby_state_show(struct device *dev, 
	if (!rdev->constraints)

		return sprintf(buf, "not defined\n");



	if (rdev->constraints->state_standby.enabled)

		return sprintf(buf, "enabled\n");

	else

		return sprintf(buf, "disabled\n");

	return regulator_print_state(buf,

			rdev->constraints->state_standby.enabled);

}



static struct device_attribute regulator_dev_attrs[] = {
@@ -1773,20 +1759,14 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, 
	/* preform any regulator specific init */

	if (init_data->regulator_init) {

		ret = init_data->regulator_init(rdev->reg_data);

		if (ret < 0) {

			kfree(rdev);

			rdev = ERR_PTR(ret);

			goto out;

		}

		if (ret < 0)

			goto clean;

	}



	/* set regulator constraints */

	ret = set_machine_constraints(rdev, &init_data->constraints);

	if (ret < 0) {

		kfree(rdev);

		rdev = ERR_PTR(ret);

		goto out;

	}

	if (ret < 0)

		goto clean;



	/* register with sysfs */

	rdev->dev.class = &regulator_class;
@@ -1794,11 +1774,8 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, 
	dev_set_name(&rdev->dev, "regulator.%d",

		     atomic_inc_return(&regulator_no) - 1);

	ret = device_register(&rdev->dev);

	if (ret != 0) {

		kfree(rdev);

		rdev = ERR_PTR(ret);

		goto out;

	}

	if (ret != 0)

		goto clean;



	dev_set_drvdata(&rdev->dev, rdev);
@@ -1806,12 +1783,8 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, 
	if (init_data->supply_regulator_dev) {

		ret = set_supply(rdev,

			dev_get_drvdata(init_data->supply_regulator_dev));

		if (ret < 0) {

			device_unregister(&rdev->dev);

			kfree(rdev);

			rdev = ERR_PTR(ret);

			goto out;

		}

		if (ret < 0)

			goto scrub;

	}



	/* add consumers devices */
@@ -1823,10 +1796,7 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, 
			for (--i; i >= 0; i--)

				unset_consumer_device_supply(rdev,

					init_data->consumer_supplies[i].dev);

			device_unregister(&rdev->dev);

			kfree(rdev);

			rdev = ERR_PTR(ret);

			goto out;

			goto scrub;

		}

	}
@@ -1834,6 +1804,13 @@ struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc, 
out:

	mutex_unlock(&regulator_list_mutex);

	return rdev;



scrub:

	device_unregister(&rdev->dev);

clean:

	kfree(rdev);

	rdev = ERR_PTR(ret);

	goto out;

}

EXPORT_SYMBOL_GPL(regulator_register);