X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Ftables_csum.h;h=4812333093a1e90dd306f29f73790b3a9eaea9a1;hb=ddd39d0cc1a025a1e2e3c792cc8286dbdfa29b54;hp=27d147b1643c13c498da2cfea1021031a4610fb5;hpb=68ff827ec74fdca8f17d469f22e1032ed14cb795;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/tables_csum.h b/include/tables_csum.h
index 27d147b..4812333 100644
--- a/include/tables_csum.h
+++ b/include/tables_csum.h
@@ -1,22 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #ifndef _TABLES_CSUM_H_
 #define _TABLES_CSUM_H_
 
-static inline u8 table_compute_checksum(void *v, int len)
-{
-	u8 *bytes = v;
-	u8 checksum = 0;
-	int i;
-
-	for (i = 0; i < len; i++)
-		checksum -= bytes[i];
-
-	return checksum;
-}
+/**
+ * table_compute_checksum() - Compute a table checksum
+ *
+ * This computes an 8-bit checksum for the configuration table.
+ * All bytes in the configuration table, including checksum itself and
+ * reserved bytes must add up to zero.
+ *
+ * @v:		configuration table base address
+ * @len:	configuration table size
+ * @return:	the 8-bit checksum
+ */
+u8 table_compute_checksum(void *v, int len);
 
 #endif