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UPSTREAM: of: Change of_machine_is_compatible() to return bool

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of_machine_is_compatible() currently returns a positive integer if it
finds a match. However none of the callers ever check the value, they
all treat it as a true/false.

So change of_machine_is_compatible() to return bool, which will allow
the implementation to be changed in a subsequent patch.

Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20231214103152.12269-2-mpe@ellerman.id.au

Bug: 339841691
(cherry picked from commit cefdb366dc)
Change-Id: I7d1369fd45bf3aeb4d2bacf4da51b9955185e296
Signed-off-by: Zhipeng Wang <zhipeng.wang_1@nxp.com>
This commit is contained in:
Michael Ellerman 2023-12-14 21:31:49 +11:00 committed by Carlos Llamas
parent f589c195b4
commit dcc1709075
2 changed files with 3 additions and 4 deletions
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5
drivers/of/base.c
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@ -419,10 +419,9 @@ bool of_machine_compatible_match(const char *const *compats)
* of_machine_is_compatible - Test root of device tree for a given compatible value
* @compat: compatible string to look for in root node's compatible property.
*
* Return: A positive integer if the root node has the given value in its
* compatible property.
* Return: true if the root node has the given value in its compatible property.
*/
int of_machine_is_compatible(const char *compat)
bool of_machine_is_compatible(const char *compat)
{
struct device_node *root;
int rc = 0;

2
include/linux/of.h
View File

@ -402,7 +402,7 @@ 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_highest_id(const char *stem);
extern int of_machine_is_compatible(const char *compat);
extern bool of_machine_is_compatible(const char *compat);
bool of_machine_compatible_match(const char *const *compats);
extern int of_add_property(struct device_node *np, struct property *prop);