4.9-stable review patch. If anyone has any objections, please let me know.
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From: Max Filippov <jcmvbkbc@xxxxxxxxx>
commit 4b3e6f2ef3722f1a6a97b6034ed492c1a21fd4ae upstream.
Commit bf15f86b343ed8 ("xtensa: initialize MMU before jumping to reset
vector") calls MMU management functions even when CONFIG_MMU is not
selected. That breaks noMMU build on cores with MMU.
Don't manage MMU when CONFIG_MMU is not selected.
Signed-off-by: Max Filippov <jcmvbkbc@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/xtensa/kernel/setup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -540,7 +540,7 @@ subsys_initcall(topology_init);
void cpu_reset(void)
{
-#if XCHAL_HAVE_PTP_MMU
+#if XCHAL_HAVE_PTP_MMU && IS_ENABLED(CONFIG_MMU)
local_irq_disable();
/*
* We have full MMU: all autoload ways, ways 7, 8 and 9 of DTLB must
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