--- zzzz-none-000/linux-5.15.111/include/linux/dma-mapping.h	2023-05-11 14:00:40.000000000 +0000
+++ puma7-arm-6670-761/linux-5.15.111/include/linux/dma-mapping.h	2024-02-07 09:28:06.000000000 +0000
@@ -1,4 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+/*
+Includes Intel Corporation's changes/modifications dated: 2014.
+Changed/modified portions - Copyright © 2014, Intel Corporation.
+*/
+
 #ifndef _LINUX_DMA_MAPPING_H
 #define _LINUX_DMA_MAPPING_H
 
@@ -596,4 +601,5 @@
 #define dma_unmap_len_set(PTR, LEN_NAME, VAL)    do { } while (0)
 #endif
 
+extern void consistent_sync(void *vaddr, size_t size, int direction);
 #endif /* _LINUX_DMA_MAPPING_H */