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of: Constify struct device_node function arguments

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Functions which don't change the refcount or otherwise modify struct
device_node can make struct device_node const.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241010-dt-const-v1-3-87a51f558425@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
This commit is contained in:
Rob Herring (Arm) 2024-10-10 11:27:16 -05:00
parent f68303cf1c
commit ec8c2329da
10 changed files with 33 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/of/address.c
View File

@ -147,7 +147,7 @@ static unsigned int of_bus_pci_get_flags(const __be32 *addr)
* PCI bus specific translator
*/
static bool of_node_is_pcie(struct device_node *np)
static bool of_node_is_pcie(const struct device_node *np)
{
bool is_pcie = of_node_name_eq(np, "pcie");
@ -230,8 +230,8 @@ static int __of_address_resource_bounds(struct resource *r, u64 start, u64 size)
* To guard against that we try to register the IO range first.
* If that fails we know that pci_address_to_pio() will do too.
*/
int of_pci_range_to_resource(struct of_pci_range *range,
struct device_node *np, struct resource *res)
int of_pci_range_to_resource(const struct of_pci_range *range,
const struct device_node *np, struct resource *res)
{
u64 start;
int err;
@ -399,7 +399,7 @@ static struct of_bus *of_match_bus(struct device_node *np)
return NULL;
}
static int of_empty_ranges_quirk(struct device_node *np)
static int of_empty_ranges_quirk(const struct device_node *np)
{
if (IS_ENABLED(CONFIG_PPC)) {
/* To save cycles, we cache the result for global "Mac" setting */
@ -1030,7 +1030,7 @@ EXPORT_SYMBOL_GPL(of_dma_is_coherent);
* This is currently only enabled on builds that support Apple ARM devices, as
* an optimization.
*/
static bool of_mmio_is_nonposted(struct device_node *np)
static bool of_mmio_is_nonposted(const struct device_node *np)
{
if (!IS_ENABLED(CONFIG_ARCH_APPLE))
return false;

8
drivers/of/base.c
View File

@ -771,7 +771,7 @@ struct device_node *of_get_child_by_name(const struct device_node *node,
}
EXPORT_SYMBOL(of_get_child_by_name);
struct device_node *__of_find_node_by_path(struct device_node *parent,
struct device_node *__of_find_node_by_path(const struct device_node *parent,
const char *path)
{
struct device_node *child;
@ -1840,7 +1840,7 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align))
*
* Return: The alias id if found.
*/
int of_alias_get_id(struct device_node *np, const char *stem)
int of_alias_get_id(const struct device_node *np, const char *stem)
{
struct alias_prop *app;
int id = -ENODEV;
@ -1898,7 +1898,7 @@ EXPORT_SYMBOL_GPL(of_alias_get_highest_id);
*
* Return: TRUE if console successfully setup. Otherwise return FALSE.
*/
bool of_console_check(struct device_node *dn, char *name, int index)
bool of_console_check(const struct device_node *dn, char *name, int index)
{
if (!dn || dn != of_stdout || console_set_on_cmdline)
return false;
@ -1986,7 +1986,7 @@ int of_find_last_cache_level(unsigned int cpu)
*
* Return: 0 on success or a standard error code on failure.
*/
int of_map_id(struct device_node *np, u32 id,
int of_map_id(const struct device_node *np, u32 id,
const char *map_name, const char *map_mask_name,
struct device_node **target, u32 *id_out)
{

2
drivers/of/cpu.c
View File

@ -188,7 +188,7 @@ EXPORT_SYMBOL(of_cpu_node_to_id);
* Return: An idle state node if found at @index. The refcount is incremented
* for it, so call of_node_put() on it when done. Returns NULL if not found.
*/
struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
struct device_node *of_get_cpu_state_node(const struct device_node *cpu_node,
int index)
{
struct of_phandle_args args;

4
drivers/of/irq.c
View File

@ -720,7 +720,7 @@ struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id,
* Returns: the MSI domain for this device (or NULL on failure).
*/
struct irq_domain *of_msi_get_domain(struct device *dev,
struct device_node *np,
const struct device_node *np,
enum irq_domain_bus_token token)
{
struct of_phandle_iterator it;
@ -742,7 +742,7 @@ EXPORT_SYMBOL_GPL(of_msi_get_domain);
* @dev: device structure to associate with an MSI irq domain
* @np: device node for that device
*/
void of_msi_configure(struct device *dev, struct device_node *np)
void of_msi_configure(struct device *dev, const struct device_node *np)
{
dev_set_msi_domain(dev,
of_msi_get_domain(dev, np, DOMAIN_BUS_PLATFORM_MSI));

2
drivers/of/of_private.h
View File

@ -127,7 +127,7 @@ void __of_prop_free(struct property *prop);
struct device_node *__of_node_dup(const struct device_node *np,
const char *full_name);
struct device_node *__of_find_node_by_path(struct device_node *parent,
struct device_node *__of_find_node_by_path(const struct device_node *parent,
const char *path);
struct device_node *__of_find_node_by_full_path(struct device_node *node,
const char *path);

14
drivers/of/overlay.c
View File

@ -398,7 +398,7 @@ static int add_changeset_property(struct overlay_changeset *ovcs,
* invalid @overlay.
*/
static int add_changeset_node(struct overlay_changeset *ovcs,
struct target *target, struct device_node *node)
struct target *target, const struct device_node *node)
{
const char *node_kbasename;
const __be32 *phandle;
@ -675,8 +675,8 @@ static int build_changeset(struct overlay_changeset *ovcs)
* 1) "target" property containing the phandle of the target
* 2) "target-path" property containing the path of the target
*/
static struct device_node *find_target(struct device_node *info_node,
struct device_node *target_base)
static struct device_node *find_target(const struct device_node *info_node,
const struct device_node *target_base)
{
struct device_node *node;
char *target_path;
@ -735,7 +735,7 @@ static struct device_node *find_target(struct device_node *info_node,
* init_overlay_changeset() must call free_overlay_changeset().
*/
static int init_overlay_changeset(struct overlay_changeset *ovcs,
struct device_node *target_base)
const struct device_node *target_base)
{
struct device_node *node, *overlay_node;
struct fragment *fragment;
@ -910,7 +910,7 @@ static void free_overlay_changeset(struct overlay_changeset *ovcs)
*/
static int of_overlay_apply(struct overlay_changeset *ovcs,
struct device_node *base)
const struct device_node *base)
{
int ret = 0, ret_revert, ret_tmp;
@ -978,7 +978,7 @@ static int of_overlay_apply(struct overlay_changeset *ovcs,
*/
int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size,
int *ret_ovcs_id, struct device_node *base)
int *ret_ovcs_id, const struct device_node *base)
{
void *new_fdt;
void *new_fdt_align;
@ -1074,7 +1074,7 @@ EXPORT_SYMBOL_GPL(of_overlay_fdt_apply);
*
* Returns 1 if @np is @tree or is contained in @tree, else 0
*/
static int find_node(struct device_node *tree, struct device_node *np)
static int find_node(const struct device_node *tree, struct device_node *np)
{
if (tree == np)
return 1;

4
drivers/of/resolver.c
View File

@ -147,8 +147,8 @@ static int node_name_cmp(const struct device_node *dn1,
* of offsets of the phandle reference(s) within the respective property
* value(s). The values at these offsets will be fixed up.
*/
static int adjust_local_phandle_references(struct device_node *local_fixups,
struct device_node *overlay, int phandle_delta)
static int adjust_local_phandle_references(const struct device_node *local_fixups,
const struct device_node *overlay, int phandle_delta)
{
struct device_node *overlay_child;
struct property *prop_fix, *prop;

14
include/linux/of.h
View File

@ -357,7 +357,7 @@ extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread);
extern struct device_node *of_cpu_device_node_get(int cpu);
extern int of_cpu_node_to_id(struct device_node *np);
extern struct device_node *of_get_next_cpu_node(struct device_node *prev);
extern struct device_node *of_get_cpu_state_node(struct device_node *cpu_node,
extern struct device_node *of_get_cpu_state_node(const struct device_node *cpu_node,
int index);
extern u64 of_get_cpu_hwid(struct device_node *cpun, unsigned int thread);
@ -395,7 +395,7 @@ extern int of_phandle_iterator_args(struct of_phandle_iterator *it,
int size);
extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align));
extern int of_alias_get_id(struct device_node *np, const char *stem);
extern int of_alias_get_id(const struct device_node *np, const char *stem);
extern int of_alias_get_highest_id(const char *stem);
bool of_machine_compatible_match(const char *const *compats);
@ -446,9 +446,9 @@ const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
*/
const char *of_prop_next_string(struct property *prop, const char *cur);
bool of_console_check(struct device_node *dn, char *name, int index);
bool of_console_check(const struct device_node *dn, char *name, int index);
int of_map_id(struct device_node *np, u32 id,
int of_map_id(const struct device_node *np, u32 id,
const char *map_name, const char *map_mask_name,
struct device_node **target, u32 *id_out);
@ -871,7 +871,7 @@ static inline void of_property_clear_flag(struct property *p, unsigned long flag
{
}
static inline int of_map_id(struct device_node *np, u32 id,
static inline int of_map_id(const struct device_node *np, u32 id,
const char *map_name, const char *map_mask_name,
struct device_node **target, u32 *id_out)
{
@ -1734,7 +1734,7 @@ struct of_overlay_notify_data {
#ifdef CONFIG_OF_OVERLAY
int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size,
int *ovcs_id, struct device_node *target_base);
int *ovcs_id, const struct device_node *target_base);
int of_overlay_remove(int *ovcs_id);
int of_overlay_remove_all(void);
@ -1744,7 +1744,7 @@ int of_overlay_notifier_unregister(struct notifier_block *nb);
#else
static inline int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size,
int *ovcs_id, struct device_node *target_base)
int *ovcs_id, const struct device_node *target_base)
{
return -ENOTSUPP;
}

4
include/linux/of_address.h
View File

@ -83,8 +83,8 @@ extern struct of_pci_range *of_pci_range_parser_one(
struct of_pci_range *range);
extern int of_pci_address_to_resource(struct device_node *dev, int bar,
struct resource *r);
extern int of_pci_range_to_resource(struct of_pci_range *range,
struct device_node *np,
extern int of_pci_range_to_resource(const struct of_pci_range *range,
const struct device_node *np,
struct resource *res);
extern int of_range_to_resource(struct device_node *np, int index,
struct resource *res);

4
include/linux/of_irq.h
View File

@ -48,12 +48,12 @@ extern int of_irq_to_resource_table(struct device_node *dev,
struct resource *res, int nr_irqs);
extern struct device_node *of_irq_find_parent(struct device_node *child);
extern struct irq_domain *of_msi_get_domain(struct device *dev,
struct device_node *np,
const struct device_node *np,
enum irq_domain_bus_token token);
extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
u32 id,
u32 bus_token);
extern void of_msi_configure(struct device *dev, struct device_node *np);
extern void of_msi_configure(struct device *dev, const struct device_node *np);
u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in);
#else
static inline void of_irq_init(const struct of_device_id *matches)