[added to the 3.18 stable tree] MIPS: Loongson-3: Add IRQF_NO_SUSPEND to Cascade irqaction

From: Huacai Chen <redacted>

This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.

===============

[ Upstream commit 0add9c2f1cff9f3f1f2eb7e9babefa872a9d14b9 ]

HPET irq is routed to i8259 and then to MIPS CPU irq (cascade). After
commit a3e6c1eff5 (MIPS: IRQ: Fix disable_irq on CPU IRQs), if without
IRQF_NO_SUSPEND in cascade_irqaction, HPET interrupts will lost during
suspend. The result is machine cannot be waken up.

Signed-off-by: Huacai Chen <redacted>
Cc: <redacted>
Cc: Steven J. Hill <redacted>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <redacted>
Cc: Zhangjin Wu <redacted>
Patchwork: https://patchwork.linux-mips.org/patch/9528/
Signed-off-by: Ralf Baechle <redacted>
Signed-off-by: Sasha Levin <redacted>
---
 arch/mips/loongson/loongson-3/irq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/loongson/loongson-3/irq.c b/arch/mips/loongson/loongson-3/irq.c
index ca1c62a..8f5209a 100644
--- a/arch/mips/loongson/loongson-3/irq.c
+++ b/arch/mips/loongson/loongson-3/irq.c

@@ -44,6 +44,7 @@ void mach_irq_dispatch(unsigned int pending)
 
 static struct irqaction cascade_irqaction = {
 	.handler = no_action,
+	.flags = IRQF_NO_SUSPEND,
 	.name = "cascade",
 };
 

-- 
2.1.0