diff mbox series

[v4,1/6] of: Add of_phandle_args_equal() helper

Message ID 20240123141311.220505-2-krzysztof.kozlowski@linaro.org
State Accepted
Commit 26ea8511c849f9fea325bcdbd8b41ea031a53afe
Headers show
Series [v4,1/6] of: Add of_phandle_args_equal() helper | expand

Commit Message

Krzysztof Kozlowski Jan. 23, 2024, 2:13 p.m. UTC 
Add a helper comparing two "struct of_phandle_args" to avoid
reinventing the wheel.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Dependency of cpufreq and reset change.
---
 include/linux/of.h | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

Comments

Philipp Zabel Jan. 23, 2024, 2:54 p.m. UTC | #1 
On Di, 2024-01-23 at 15:13 +0100, Krzysztof Kozlowski wrote:
> Add a helper comparing two "struct of_phandle_args" to avoid
> reinventing the wheel.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>

regards
Philipp
diff mbox series

Patch

diff --git a/include/linux/of.h b/include/linux/of.h
index 6a9ddf20e79a..85bcc05b278d 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -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
  *