[PATCH 5.4 050/168] csky/mm: Fixup export invalid_pte_table symbol

Greg Kroah-Hartman
2020-03-10T12:50:11Z

From: Guo Ren <guoren@linux.alibaba.com>

[ Upstream commit 7f4a567332f035ab16b29010fbd04a0f10183c77 ]

There is no present bit in csky pmd hardware, so we need to prepare invalid_pte_table
for empty pmd entry and the functions (pmd_none & pmd_present) in pgtable.h need
invalid_pte_talbe to get result. If a module use these functions, we need export the
symbol for it.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Cc: Mo Qihui <qihui.mo@verisilicon.com>
Cc: Zhange Jian <zhang_jian5@dahuatech.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/csky/mm/init.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c
index d4c2292ea46bc..00e96278b3776 100644
--- a/arch/csky/mm/init.c
+++ b/arch/csky/mm/init.c
@@ -31,6 +31,7 @@

pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned_bss;
+EXPORT_SYMBOL(invalid_pte_table);
unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]
__page_aligned_bss;
EXPORT_SYMBOL(empty_zero_page);
--
2.20.1