From 536175f0065cb49da7caf245e9352b341894c46a Mon Sep 17 00:00:00 2001
From: Huang Pei <huangpei@loongson.cn>
Date: Tue, 23 Mar 2021 10:34:02 +0800
Subject: [PATCH] MIPS: fix local_irq_{disable,enable} in asmmacro.h
[ Upstream commit 05c4e2721d7af0df7bc1378a23712a0fd16947b5 ]
commit ba9196d2e005 ("MIPS: Make DIEI support as a config option")
use CPU_HAS_DIEI to indicate whether di/ei is implemented correctly,
without this patch, "local_irq_disable" from entry.S in 3A1000
(with buggy di/ei) lose protection of commit e97c5b609880 ("MIPS:
Make irqflags.h functions preempt-safe for non-mipsr2 cpus")
Fixes: ba9196d2e005 ("MIPS: Make DIEI support as a config option")
Signed-off-by: Huang Pei <huangpei@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/mips/include/asm/asmmacro.h | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index 86f2323ebe6bcd..ca83ada7015f52 100644
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -44,8 +44,7 @@
.endm
#endif
-#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_CPU_MIPSR5) || \
- defined(CONFIG_CPU_MIPSR6)
+#ifdef CONFIG_CPU_HAS_DIEI
.macro local_irq_enable reg=t0
ei
irq_enable_hazard
--
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