From: Guixiong Wei <guixiongwei@gmail.com>

Date: Fri, 1 May 2020 06:18:58 +1400

Subject: arm: mm: use __pfn_to_section() to get mem_section

Git-commit: 037d9303a7e7bac622e299817c5dd288346db07c

Patch-mainline: v5.8-rc1

References: git-fixes

Replace the open-coded '__nr_to_section(pfn_to_section_nr(pfn))' in

pfn_valid() with a more concise call to '__pfn_to_section(pfn)'.

No functional change.

Signed-off-by: Guixiong Wei <guixiongwei@gmail.com>

Link: https://lore.kernel.org/r/20200430161858.11379-1-guixiongwei@gmail.com

Signed-off-by: Will Deacon <will@kernel.org>

Signed-off-by: Mian Yousaf Kaukab <ykaukab@suse.de>

---

 arch/arm64/mm/init.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c

index e42727e3568e..d2df416b840e 100644

--- a/arch/arm64/mm/init.c

+++ b/arch/arm64/mm/init.c

@@ -272,7 +272,7 @@ int pfn_valid(unsigned long pfn)

 	if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)

 		return 0;

-	if (!valid_section(__nr_to_section(pfn_to_section_nr(pfn))))

+	if (!valid_section(__pfn_to_section(pfn)))

 		return 0;

 #endif

 	return memblock_is_map_memory(addr);

-- 

2.26.2