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sparc32: use PUD rather than PGD to get PMD in srmmu_inherit_prom_mappings()

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This is a misprint in the page table traversal in
srmmu_inherit_prom_mappings`() function which accessed a PMD entry using
PGD rather than PUD.

Since sparc32 has only 3 page table levels, the PGD and PUD are
essentially the same and usage of __nocache_fix() removed the type
checking.

Use PUD for the consistency and to avoid breakage because of upcoming
addition of type checking into __nocache_fix().

Fixes: 7235db268a ("sparc32: use pgtable-nopud instead of 4level-fixup")
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mike Rapoport 2020-06-27 11:16:52 +03:00 committed by David S. Miller
parent 7780918b36
commit 72a7af33e0
1 changed files with 1 additions and 1 deletions
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2
arch/sparc/mm/srmmu.c
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@ -822,7 +822,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
memset(__nocache_fix(pmdp), 0, SRMMU_PMD_TABLE_SIZE);
pud_set(__nocache_fix(pudp), pmdp);
}
pmdp = pmd_offset(__nocache_fix(pgdp), start);
pmdp = pmd_offset(__nocache_fix(pudp), start);
if (what == 1) {
*(pmd_t *)__nocache_fix(pmdp) = __pmd(probed);
start += PMD_SIZE;