MIPS: Loongson32: workaround di issue

FlyGoat · paulburton · commit bdea8bb16345 · 2019-01-22T17:32:01.000-08:00
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 &lt;jiaxun.yang@flygoat.com&gt;
Signed-off-by: Paul Burton &lt;paul.burton@mips.com&gt;
Cc: linux-mips@vger.kernel.org
Cc: keguang.zhang@gmail.com
diff --git 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
