linux-kernel - [PATCH AUTOSEL 5.2 019/123] mips: fix cacheinfo

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Date:   Tue, 13 Aug 2019 22:09:03 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Vladimir Kondratiev <vladimir.kondratiev@...ux.intel.com>,
        Paul Burton <paul.burton@...s.com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        James Hogan <jhogan@...nel.org>, linux-mips@...r.kernel.org,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 5.2 019/123] mips: fix cacheinfo

From: Vladimir Kondratiev <vladimir.kondratiev@...ux.intel.com>

[ Upstream commit b8bea8a5e5d942e62203416ab41edecaed4fda02 ]

Because CONFIG_OF defined for MIPS, cacheinfo attempts to fill information
from DT, ignoring data filled by architecture routine. This leads to error
reported

 cacheinfo: Unable to detect cache hierarchy for CPU 0

Way to fix this provided in
commit fac51482577d ("drivers: base: cacheinfo: fix x86 with
 CONFIG_OF enabled")

Utilize same mechanism to report that cacheinfo set by architecture
specific function

Signed-off-by: Vladimir Kondratiev <vladimir.kondratiev@...ux.intel.com>
Signed-off-by: Paul Burton <paul.burton@...s.com>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: James Hogan <jhogan@...nel.org>
Cc: linux-mips@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/mips/kernel/cacheinfo.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/kernel/cacheinfo.c b/arch/mips/kernel/cacheinfo.c
index e0dd66881da68..f777e44653d57 100644
--- a/arch/mips/kernel/cacheinfo.c
+++ b/arch/mips/kernel/cacheinfo.c
@@ -69,6 +69,8 @@ static int __populate_cache_leaves(unsigned int cpu)
 	if (c->tcache.waysize)
 		populate_cache(tcache, this_leaf, 3, CACHE_TYPE_UNIFIED);
 
+	this_cpu_ci->cpu_map_populated = true;
+
 	return 0;
 }
 
-- 
2.20.1