Commit 26ea8511 authored by Krzysztof Kozlowski's avatar Krzysztof Kozlowski Committed by Philipp Zabel
Browse files

of: Add of_phandle_args_equal() helper 



Add a helper comparing two "struct of_phandle_args" to avoid
reinventing the wheel.

Reviewed-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240129115216.96479-2-krzysztof.kozlowski@linaro.org


Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent a6166a4d

include/linux/of.h

+16 −0
Original line number Diff line number Diff line
@@ -1065,6 +1065,22 @@ static inline int of_parse_phandle_with_optional_args(const struct device_node * 
					    0, index, out_args);

}



/**

 * of_phandle_args_equal() - Compare two of_phandle_args

 * @a1:		First of_phandle_args to compare

 * @a2:		Second of_phandle_args to compare

 *

 * Return: True if a1 and a2 are the same (same node pointer, same phandle

 * args), false otherwise.

 */

static inline bool of_phandle_args_equal(const struct of_phandle_args *a1,

					 const struct of_phandle_args *a2)

{

	return a1->np == a2->np &&

	       a1->args_count == a2->args_count &&

	       !memcmp(a1->args, a2->args, sizeof(a1->args[0]) * a1->args_count);

}



/**

 * of_property_count_u8_elems - Count the number of u8 elements in a property

 *