powerpc: Fix pgtable pmd cache init
authorNicholas Piggin <npiggin@gmail.com>
Tue, 3 Jan 2017 15:55:17 +0000 (01:55 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 18 Jan 2017 00:58:30 +0000 (11:58 +1100)
commitbf5ca68dd2eef59a936969e802d811bdac4709c2
tree4db392d212aab7a1190f304621fc81ee3639df77
parent9728a7c8ab2f7a1c8d5c95278d2e4f4ac1285385
powerpc: Fix pgtable pmd cache init

Commit 9b081e10805cd ("powerpc: port 64 bits pgtable_cache to 32 bits")
mixed up PMD_INDEX_SIZE and PMD_CACHE_INDEX a couple of times. This
resulted in 64s/hash/4k configs to panic at boot with a false positive
error check.

Fix that and simplify error handling by moving the check to the caller.

Fixes: 9b081e10805cd ("powerpc: port 64 bits pgtable_cache to 32 bits")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/mm/hugetlbpage.c
arch/powerpc/mm/init-common.c