| From | Luis Henriques <> | Subject | [PATCH 3.16.y-ckt 067/180] MIPS: Loongson-3: Add IRQF_NO_SUSPEND to Cascade irqaction | Date | Thu, 7 May 2015 10:44:36 +0100 |
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3.16.7-ckt11 -stable review patch. If anyone has any objections, please let me know.
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From: Huacai Chen <chenhc@lemote.com>
commit 0add9c2f1cff9f3f1f2eb7e9babefa872a9d14b9 upstream.
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 <chenhc@lemote.com> Cc: Steven J. Hill <Steven.Hill@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Patchwork: https://patchwork.linux-mips.org/patch/9528/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- 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 f240828181ff..f2077f201a2a 100644 --- a/arch/mips/loongson/loongson-3/irq.c +++ b/arch/mips/loongson/loongson-3/irq.c @@ -42,6 +42,7 @@ void mach_irq_dispatch(unsigned int pending) static struct irqaction cascade_irqaction = { .handler = no_action, + .flags = IRQF_NO_SUSPEND, .name = "cascade", };
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