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MIPS: fix local_irq_{disable,enable} in asmmacro.h

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[ Upstream commit 05c4e2721d7af0df7bc1378a23712a0fd16947b5 ]

commit ba9196d2e0 ("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 e97c5b6098 ("MIPS:
Make irqflags.h functions preempt-safe for non-mipsr2 cpus")

Fixes: ba9196d2e0 ("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>
This commit is contained in:
Huang Pei 2021-03-23 10:34:02 +08:00 committed by Greg Kroah-Hartman
parent 4c45556db3
commit 536175f006
1 changed files with 1 additions and 2 deletions
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3
arch/mips/include/asm/asmmacro.h
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@ -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