From: Anup Patel <apatel@ventanamicro.com>
Date: Mon, 18 Aug 2025 04:09:02 +0000 (+0530)
Subject: byteorder: Add memcpy_to_le32() and memcpy_from_le32()
X-Git-Tag: v6.18-rc1~90^2~20
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f01c24f3a7525e953d514367a6d91b39c8f1f6a;p=thirdparty%2Fkernel%2Flinux.git

byteorder: Add memcpy_to_le32() and memcpy_from_le32()

Add common memcpy APIs for copying u32 array to/from __le32 array.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jassi Brar <jassisinghbrar@gmail.com>
Link: https://lore.kernel.org/r/20250818040920.272664-7-apatel@ventanamicro.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
---

diff --git a/include/linux/byteorder/generic.h b/include/linux/byteorder/generic.h
index c9a4c96c99430..b3705e8bbe2b8 100644
--- a/include/linux/byteorder/generic.h
+++ b/include/linux/byteorder/generic.h
@@ -173,6 +173,22 @@ static inline void cpu_to_le32_array(u32 *buf, unsigned int words)
 	}
 }
 
+static inline void memcpy_from_le32(u32 *dst, const __le32 *src, size_t words)
+{
+	size_t i;
+
+	for (i = 0; i < words; i++)
+		dst[i] = le32_to_cpu(src[i]);
+}
+
+static inline void memcpy_to_le32(__le32 *dst, const u32 *src, size_t words)
+{
+	size_t i;
+
+	for (i = 0; i < words; i++)
+		dst[i] = cpu_to_le32(src[i]);
+}
+
 static inline void be16_add_cpu(__be16 *var, u16 val)
 {
 	*var = cpu_to_be16(be16_to_cpu(*var) + val);