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of: provide of_machine_read_model()

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Provide a helper function allowing users to read the model string of the
machine, hiding the access to the root node.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260223-soc-of-root-v2-2-b45da45903c8@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bartosz Golaszewski 2026-02-23 14:37:17 +01:00 committed by Greg Kroah-Hartman
parent 59621105ff
commit c86d3b7b84
2 changed files with 19 additions and 0 deletions
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13
drivers/of/base.c
View File

@ -449,6 +449,19 @@ int of_machine_read_compatible(const char **compatible, unsigned int index)
}
EXPORT_SYMBOL_GPL(of_machine_read_compatible);
/**
* of_machine_read_model - Get the model string of this machine
* @model: address at which the address of the model string will be stored
*
* Returns:
* 0 on success, negative error number on failure.
*/
int of_machine_read_model(const char **model)
{
return of_property_read_string(of_root, "model", model);
}
EXPORT_SYMBOL_GPL(of_machine_read_model);
/**
* of_machine_device_match - Test root of device tree against a of_device_id array
* @matches: NULL terminated array of of_device_id match structures to search in

6
include/linux/of.h
View File

@ -427,6 +427,7 @@ static inline bool of_machine_is_compatible(const char *compat)
}
int of_machine_read_compatible(const char **compatible, unsigned int index);
int of_machine_read_model(const char **model);
extern int of_add_property(struct device_node *np, struct property *prop);
extern int of_remove_property(struct device_node *np, struct property *prop);
@ -859,6 +860,11 @@ static inline int of_machine_read_compatible(const char **compatible,
return -ENOSYS;
}
static inline int of_machine_read_model(const char **model)
{
return -ENOSYS;
}
static inline int of_add_property(struct device_node *np, struct property *prop)
{
return 0;