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Commit f1195eb2 authored by Rob Herring's avatar Rob Herring Committed by Greg Kroah-Hartman
Browse files

of: Add of_property_present() helper 



[ Upstream commit 9cbad37ce8122de32a1529e394b468bc101c9e7f ]

Add an of_property_present() function similar to
fwnode_property_present(). of_property_read_bool() could be used
directly, but it is cleaner to not use it on non-boolean properties.

Reviewed-by: default avatarFrank Rowand <frowand.list@gmail.com>
Tested-by: default avatarFrank Rowand <frowand.list@gmail.com>
Link: https://lore.kernel.org/all/20230215215547.691573-1-robh@kernel.org/


Signed-off-by: default avatarRob Herring <robh@kernel.org>
Stable-dep-of: 171eb6f71e9e ("ASoC: meson: meson-card-utils: use of_property_present() for DT parsing")
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 9c473626

include/linux/of.h

+16 −1
Original line number Diff line number Diff line
@@ -1044,7 +1044,8 @@ static inline int of_property_read_string_index(const struct device_node *np, 
 * @np:		device node from which the property value is to be read.

 * @propname:	name of the property to be searched.

 *

 * Search for a property in a device node.

 * Search for a boolean property in a device node. Usage on non-boolean

 * property types is deprecated.

 *

 * Return: true if the property exists false otherwise.

 */
@@ -1056,6 +1057,20 @@ static inline bool of_property_read_bool(const struct device_node *np, 
	return prop ? true : false;

}



/**

 * of_property_present - Test if a property is present in a node

 * @np:		device node to search for the property.

 * @propname:	name of the property to be searched.

 *

 * Test for a property present in a device node.

 *

 * Return: true if the property exists false otherwise.

 */

static inline bool of_property_present(const struct device_node *np, const char *propname)

{

	return of_property_read_bool(np, propname);

}



/**

 * of_property_read_u8_array - Find and read an array of u8 from a property.

 *