From: Max Filippov <jcmvbkbc@gmail.com>
Date: Sat, 19 Jan 2019 08:26:48 +0000 (-0800)
Subject: xtensa: SMP: mark each possible CPU as present
X-Git-Tag: v3.18.137~74
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=245fa9e4c8b833d0393cf519517eb4e9c111b7aa;p=thirdparty%2Fkernel%2Fstable.git

xtensa: SMP: mark each possible CPU as present

[ Upstream commit 8b1c42cdd7181200dc1fff39dcb6ac1a3fac2c25 ]

Otherwise it is impossible to enable CPUs after booting with 'maxcpus'
parameter.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c
index 545144d1431d5..0e34c1ed4aa8f 100644
--- a/arch/xtensa/kernel/smp.c
+++ b/arch/xtensa/kernel/smp.c
@@ -80,7 +80,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 {
 	unsigned i;
 
-	for (i = 0; i < max_cpus; ++i)
+	for_each_possible_cpu(i)
 		set_cpu_present(i, true);
 }