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MIPS: Loongson32: workaround di issue 

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>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: keguang.zhang@gmail.com
hifive-unleashed-5.1
Jiaxun Yang 2019-01-22 21:04:11 +08:00 committed by Paul Burton
parent d1b83f0f63
commit bdea8bb163
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GPG Key ID: 3EA79FACB57500DD
1 changed files with 1 additions and 1 deletions
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2
arch/mips/include/asm/irqflags.h
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@ -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