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driver core: class: make class_find_device*() options const 

The class_find_device*() functions do not modify the struct class or the
struct device passed into it, so mark them as const * to enforce that.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/20230313181843.1207845-7-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-03-13 19:18:38 +01:00
parent 69df024ebb
commit cf41015ea8
2 changed files with 13 additions and 14 deletions
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2
drivers/base/class.c
View File

@ -402,7 +402,7 @@ EXPORT_SYMBOL_GPL(class_for_each_device);
* @match is allowed to do anything including calling back into class
* code. There's no locking restriction.
*/
struct device *class_find_device(struct class *class, struct device *start,
struct device *class_find_device(const struct class *class, const struct device *start,
const void *data,
int (*match)(struct device *, const void *))
{

25
include/linux/device/class.h
View File

@ -112,8 +112,8 @@ extern void class_dev_iter_exit(struct class_dev_iter *iter);
extern int class_for_each_device(const struct class *class, const struct device *start,
void *data,
int (*fn)(struct device *dev, void *data));
extern struct device *class_find_device(struct class *class,
struct device *start, const void *data,
extern struct device *class_find_device(const struct class *class,
const struct device *start, const void *data,
int (*match)(struct device *, const void *));
/**
@ -122,7 +122,7 @@ extern struct device *class_find_device(struct class *class,
* @class: class type
* @name: name of the device to match
*/
static inline struct device *class_find_device_by_name(struct class *class,
static inline struct device *class_find_device_by_name(const struct class *class,
const char *name)
{
return class_find_device(class, NULL, name, device_match_name);
@ -134,8 +134,8 @@ static inline struct device *class_find_device_by_name(struct class *class,
* @class: class type
* @np: of_node of the device to match.
*/
static inline struct device *
class_find_device_by_of_node(struct class *class, const struct device_node *np)
static inline struct device *class_find_device_by_of_node(const struct class *class,
const struct device_node *np)
{
return class_find_device(class, NULL, np, device_match_of_node);
}
@ -146,9 +146,8 @@ class_find_device_by_of_node(struct class *class, const struct device_node *np)
* @class: class type
* @fwnode: fwnode of the device to match.
*/
static inline struct device *
class_find_device_by_fwnode(struct class *class,
const struct fwnode_handle *fwnode)
static inline struct device *class_find_device_by_fwnode(const struct class *class,
const struct fwnode_handle *fwnode)
{
return class_find_device(class, NULL, fwnode, device_match_fwnode);
}
@ -159,7 +158,7 @@ class_find_device_by_fwnode(struct class *class,
* @class: class type
* @devt: device type of the device to match.
*/
static inline struct device *class_find_device_by_devt(struct class *class,
static inline struct device *class_find_device_by_devt(const struct class *class,
dev_t devt)
{
return class_find_device(class, NULL, &devt, device_match_devt);
@ -173,14 +172,14 @@ struct acpi_device;
* @class: class type
* @adev: ACPI_COMPANION device to match.
*/
static inline struct device *
class_find_device_by_acpi_dev(struct class *class, const struct acpi_device *adev)
static inline struct device *class_find_device_by_acpi_dev(const struct class *class,
const struct acpi_device *adev)
{
return class_find_device(class, NULL, adev, device_match_acpi_dev);
}
#else
static inline struct device *
class_find_device_by_acpi_dev(struct class *class, const void *adev)
static inline struct device *class_find_device_by_acpi_dev(const struct class *class,
const void *adev)
{
return NULL;
}