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Commit 24751434 authored by Stephen Boyd's avatar Stephen Boyd Committed by Mark Brown
Browse files

regulator: Remove ifdefs for debugfs code 



If CONFIG_DEBUG_FS=y debugfs functions will never return an
ERR_PTR. Instead they'll return NULL. The intent is to remove
ifdefs in calling code.

Update the code to reflect this. We gain an extra dentry pointer
per struct regulator and struct regulator_dev but that should be
ok because most distros have debugfs compiled in anyway.

Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent f4d562c6

drivers/regulator/core.c

+6 −22
Original line number Diff line number Diff line
@@ -52,9 +52,7 @@ static LIST_HEAD(regulator_map_list); 
static bool has_full_constraints;

static bool board_wants_dummy_regulator;



#ifdef CONFIG_DEBUG_FS

static struct dentry *debugfs_root;

#endif



/*

 * struct regulator_map
@@ -82,9 +80,7 @@ struct regulator { 
	char *supply_name;

	struct device_attribute dev_attr;

	struct regulator_dev *rdev;

#ifdef CONFIG_DEBUG_FS

	struct dentry *debugfs;

#endif

};



static int _regulator_is_enabled(struct regulator_dev *rdev);
@@ -1145,12 +1141,10 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, 
			goto attr_err;

	}



#ifdef CONFIG_DEBUG_FS

	regulator->debugfs = debugfs_create_dir(regulator->supply_name,

						rdev->debugfs);

	if (IS_ERR_OR_NULL(regulator->debugfs)) {

	if (!regulator->debugfs) {

		rdev_warn(rdev, "Failed to create debugfs directory\n");

		regulator->debugfs = NULL;

	} else {

		debugfs_create_u32("uA_load", 0444, regulator->debugfs,

				   &regulator->uA_load);
@@ -1159,7 +1153,6 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, 
		debugfs_create_u32("max_uV", 0444, regulator->debugfs,

				   &regulator->max_uV);

	}

#endif



	mutex_unlock(&rdev->mutex);

	return regulator;
@@ -1368,9 +1361,7 @@ void regulator_put(struct regulator *regulator) 
	mutex_lock(&regulator_list_mutex);

	rdev = regulator->rdev;



#ifdef CONFIG_DEBUG_FS

	debugfs_remove_recursive(regulator->debugfs);

#endif



	/* remove any sysfs entries */

	if (regulator->dev) {
@@ -2710,11 +2701,9 @@ static int add_regulator_attributes(struct regulator_dev *rdev) 


static void rdev_init_debugfs(struct regulator_dev *rdev)

{

#ifdef CONFIG_DEBUG_FS

	rdev->debugfs = debugfs_create_dir(rdev_get_name(rdev), debugfs_root);

	if (IS_ERR_OR_NULL(rdev->debugfs)) {

	if (!rdev->debugfs) {

		rdev_warn(rdev, "Failed to create debugfs directory\n");

		rdev->debugfs = NULL;

		return;

	}
@@ -2722,7 +2711,6 @@ static void rdev_init_debugfs(struct regulator_dev *rdev) 
			   &rdev->use_count);

	debugfs_create_u32("open_count", 0444, rdev->debugfs,

			   &rdev->open_count);

#endif

}



/**
@@ -2900,9 +2888,7 @@ void regulator_unregister(struct regulator_dev *rdev) 
		return;



	mutex_lock(&regulator_list_mutex);

#ifdef CONFIG_DEBUG_FS

	debugfs_remove_recursive(rdev->debugfs);

#endif

	flush_work_sync(&rdev->disable_work.work);

	WARN_ON(rdev->open_count);

	unset_regulator_supplies(rdev);
@@ -3112,12 +3098,14 @@ static ssize_t supply_map_read_file(struct file *file, char __user *user_buf, 


	return ret;

}

#endif



static const struct file_operations supply_map_fops = {

#ifdef CONFIG_DEBUG_FS

	.read = supply_map_read_file,

	.llseek = default_llseek,

};

#endif

};



static int __init regulator_init(void)

{
@@ -3125,16 +3113,12 @@ static int __init regulator_init(void) 


	ret = class_register(&regulator_class);



#ifdef CONFIG_DEBUG_FS

	debugfs_root = debugfs_create_dir("regulator", NULL);

	if (IS_ERR_OR_NULL(debugfs_root)) {

	if (!debugfs_root)

		pr_warn("regulator: Failed to create debugfs directory\n");

		debugfs_root = NULL;

	}



	debugfs_create_file("supply_map", 0444, debugfs_root, NULL,

			    &supply_map_fops);

#endif



	regulator_dummy_init();

include/linux/regulator/driver.h

+0 −2
Original line number Diff line number Diff line
@@ -207,9 +207,7 @@ struct regulator_dev { 


	void *reg_data;		/* regulator_dev data */



#ifdef CONFIG_DEBUG_FS

	struct dentry *debugfs;

#endif

};



struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,