From: Randy Dunlap <rdun...@infradead.org>
[ Upstream commit 6b5ff0405e4190f23780362ea324b250bc495683 ]
0day bot reports a build error:
ERROR: modpost: "clear_user_page"
[drivers/media/v4l2-core/videobuf-dma-sg.ko] undefined!
so export it in arch/arc/ to fix the build error.
In most ARCHes, clear_user_page() is a macro. OTOH, in a few
ARCHes it is a function and needs to be exported.
PowerPC exported it in 2004. It looks like nds32 and nios2
still need to have it exported.
Fixes: 4102b53392d63 ("ARC: [mm] Aliasing VIPT dcache support 2/4")
Signed-off-by: Randy Dunlap <rdun...@infradead.org>
Reported-by: kernel test robot <l...@intel.com>
Cc: Guenter Roeck <li...@roeck-us.net>
Cc: linux-snps-arc@lists.infradead.org
Signed-off-by: Vineet Gupta <vgu...@kernel.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
arch/arc/mm/cache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arc/mm/cache.c b/arch/arc/mm/cache.c
index 017fb440bba4..f425405a8a76 100644
--- a/arch/arc/mm/cache.c
+++ b/arch/arc/mm/cache.c
@@ -904,7 +904,7 @@ void clear_user_page(void *to, unsigned long u_vaddr,
struct page *page)
clear_page(to);
clear_bit(PG_dc_clean, &page->flags);
}
-
+EXPORT_SYMBOL(clear_user_page);
/**********************************************************************
* Explicit Cache flush request from user space via syscall
--
2.30.2
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