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powerpc/pkeys: Fix calculation of total pkeys.

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commit fe6a2804e6 upstream.

Total number of pkeys calculation is off by 1. Fix it.

Fixes: 4fb158f65a ("powerpc: track allocation status of all pkeys")
Cc: stable@vger.kernel.org # v4.16+
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ram Pai
2018-09-09 10:32:31 +02:00
committed by Greg Kroah-Hartman
parent 5e2727bf84
commit 44d146b99b
1 changed files with 1 additions and 1 deletions
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arch/powerpc/mm/pkeys.c
+1 -1
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@@ -92,7 +92,7 @@ int pkey_initialize(void)
* arch-neutral code.
*/
pkeys_total = min_t(int, pkeys_total,
(ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT));
((ARCH_VM_PKEY_FLAGS >> VM_PKEY_SHIFT)+1));
if (!pkey_mmu_enabled() || radix_enabled() || !pkeys_total)
static_branch_enable(&pkey_disabled);