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arm64: mm: simplify the page end calculation in __create_pgd_mapping() 

Calculate the page-aligned end address more simply.

The local variable, "length" is unneeded.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Masahiro Yamada 2019-11-03 21:35:58 +09:00 committed by Catalin Marinas
parent e44ec4a35d
commit 32d1870877
1 changed files with 2 additions and 3 deletions
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5
arch/arm64/mm/mmu.c
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@ -338,7 +338,7 @@ static void __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys,
phys_addr_t (*pgtable_alloc)(int),
int flags)
{
unsigned long addr, length, end, next;
unsigned long addr, end, next;
pgd_t *pgdp = pgd_offset_raw(pgdir, virt);
/*
@ -350,9 +350,8 @@ static void __create_pgd_mapping(pgd_t *pgdir, phys_addr_t phys,
phys &= PAGE_MASK;
addr = virt & PAGE_MASK;
length = PAGE_ALIGN(size + (virt & ~PAGE_MASK));
end = PAGE_ALIGN(virt + size);
end = addr + length;
do {
next = pgd_addr_end(addr, end);
alloc_init_pud(pgdp, addr, next, phys, prot, pgtable_alloc,