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From: Jiaxun Yang <jiaxun.yang@flygoat.com>
To: linux-mips@vger.kernel.org
Cc: keguang.zhang@gmail.com, paul.burton@mips.com,
	Jiaxun Yang <jiaxun.yang@flygoat.com>
Subject: [PATCH 2/6] MIPS: Loongson32: workaround di issue
Date: Tue, 22 Jan 2019 21:04:11 +0800	[thread overview]
Message-ID: <20190122130415.3440-2-jiaxun.yang@flygoat.com> (raw)
In-Reply-To: <20190122130415.3440-1-jiaxun.yang@flygoat.com>

GS232 core used in Loongson-1 processors has a bug that
di instruction doesn't save the irqflag immediately.

Workaround by set irqflag in CP0 before di instructions
as same as Loongson-3.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
---
 arch/mips/include/asm/irqflags.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/irqflags.h b/arch/mips/include/asm/irqflags.h
index 9d3610be2323..59549d972439 100644
--- a/arch/mips/include/asm/irqflags.h
+++ b/arch/mips/include/asm/irqflags.h
@@ -41,7 +41,7 @@ static inline unsigned long arch_local_irq_save(void)
 	"	.set	push						\n"
 	"	.set	reorder						\n"
 	"	.set	noat						\n"
-#if defined(CONFIG_CPU_LOONGSON3)
+#if defined(CONFIG_CPU_LOONGSON3) || defined (CONFIG_CPU_LOONGSON1)
 	"	mfc0	%[flags], $12					\n"
 	"	di							\n"
 #else
-- 
2.20.1


  reply	other threads:[~2019-01-22 13:05 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-22 13:04 [PATCH 1/6] MIPS: Loongson32: Remove unused platform devices Jiaxun Yang
2019-01-22 13:04 ` Jiaxun Yang [this message]
2019-01-22 17:39   ` [PATCH 2/6] MIPS: Loongson32: workaround di issue Paul Burton
2019-01-23  0:19     ` Jiaxun Yang
2019-01-23  1:34   ` Paul Burton
2019-01-22 13:04 ` [PATCH 3/6] MIPS: Loongson32: Revert ISA level to MIPS32R2 Jiaxun Yang
2019-01-23  1:34   ` Paul Burton
2019-01-22 13:04 ` [PATCH 4/6] MIPS: Loongson32: clarify we don't support MIPS16 and merge configs Jiaxun Yang
2019-01-23  1:34   ` Paul Burton
2019-01-22 13:04 ` [PATCH 5/6] MIPS: Loongson32: Set load address to 0x80200000 Jiaxun Yang
2019-01-23  1:34   ` Paul Burton
2019-01-22 13:04 ` [PATCH 6/6] cpu-probe: Rename Loongson 1B to Loongson GS232 Jiaxun Yang
2019-01-23  1:34 ` [PATCH 1/6] MIPS: Loongson32: Remove unused platform devices Paul Burton
     [not found]   ` <CAJhJPsU1DPBp6it0agNrDfLpQGRV0c45mH6mTi=wcwt0OZikkQ@mail.gmail.com>
2019-01-23  3:40     ` Jiaxun Yang
2019-01-23 21:40       ` Paul Burton

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