From: Max Filippov <jcmvbkbc@gmail.com>
Date: Tue, 1 Aug 2017 11:15:15 -0700
Subject: [PATCH] xtensa: mm/cache: add missing EXPORT_SYMBOLs
References: bnc#1060662
Patch-mainline: v4.12.8
Git-commit: bc652eb6a0d5cffaea7dc8e8ad488aab2a1bf1ed

commit bc652eb6a0d5cffaea7dc8e8ad488aab2a1bf1ed upstream.

Functions clear_user_highpage, copy_user_highpage, flush_dcache_page,
local_flush_cache_range and local_flush_cache_page may be used from
modules. Export them.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/xtensa/mm/cache.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/xtensa/mm/cache.c b/arch/xtensa/mm/cache.c
index dbb1cdef3663..3c75c4e597da 100644
--- a/arch/xtensa/mm/cache.c
+++ b/arch/xtensa/mm/cache.c
@@ -103,6 +103,7 @@ void clear_user_highpage(struct page *page, unsigned long vaddr)
 	clear_page_alias(kvaddr, paddr);
 	preempt_enable();
 }
+EXPORT_SYMBOL(clear_user_highpage);
 
 void copy_user_highpage(struct page *dst, struct page *src,
 			unsigned long vaddr, struct vm_area_struct *vma)
@@ -119,6 +120,7 @@ void copy_user_highpage(struct page *dst, struct page *src,
 	copy_page_alias(dst_vaddr, src_vaddr, dst_paddr, src_paddr);
 	preempt_enable();
 }
+EXPORT_SYMBOL(copy_user_highpage);
 
 /*
  * Any time the kernel writes to a user page cache page, or it is about to
@@ -172,7 +174,7 @@ void flush_dcache_page(struct page *page)
 
 	/* There shouldn't be an entry in the cache for this page anymore. */
 }
-
+EXPORT_SYMBOL(flush_dcache_page);
 
 /*
  * For now, flush the whole cache. FIXME??
@@ -184,6 +186,7 @@ void local_flush_cache_range(struct vm_area_struct *vma,
 	__flush_invalidate_dcache_all();
 	__invalidate_icache_all();
 }
+EXPORT_SYMBOL(local_flush_cache_range);
 
 /* 
  * Remove any entry in the cache for this page. 
@@ -203,6 +206,7 @@ void local_flush_cache_page(struct vm_area_struct *vma, unsigned long address,
 	__flush_invalidate_dcache_page_alias(virt, phys);
 	__invalidate_icache_page_alias(virt, phys);
 }
+EXPORT_SYMBOL(local_flush_cache_page);
 
 #endif /* DCACHE_WAY_SIZE > PAGE_SIZE */
 
-- 
2.14.2