MIPS: Mark cascade and low level interrupts IRQF_NO_THREAD

Mark interrupts with no_action handler, cascade interrupts, low level
interrupts (bus error, halt ..) with IRQF_NO_THREAD to exclude them
from forced threading.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c
index 1d36c511..d53ff91 100644
--- a/arch/mips/mti-malta/malta-int.c
+++ b/arch/mips/mti-malta/malta-int.c
@@ -350,12 +350,14 @@
 
 static struct irqaction i8259irq = {
 	.handler = no_action,
-	.name = "XT-PIC cascade"
+	.name = "XT-PIC cascade",
+	.flags = IRQF_NO_THREAD,
 };
 
 static struct irqaction corehi_irqaction = {
 	.handler = no_action,
-	.name = "CoreHi"
+	.name = "CoreHi",
+	.flags = IRQF_NO_THREAD,
 };
 
 static msc_irqmap_t __initdata msc_irqmap[] = {