releases/3.19.7/mips-loongson-3-add-irqf_no_suspend-to-cascade-irqaction.patch

   1 From 0add9c2f1cff9f3f1f2eb7e9babefa872a9d14b9 Mon Sep 17 00:00:00 2001
   2 From: Huacai Chen <chenhc@lemote.com>
   3 Date: Thu, 12 Mar 2015 11:51:06 +0800
   4 Subject: MIPS: Loongson-3: Add IRQF_NO_SUSPEND to Cascade irqaction
   5
   6 From: Huacai Chen <chenhc@lemote.com>
   7
   8 commit 0add9c2f1cff9f3f1f2eb7e9babefa872a9d14b9 upstream.
   9
  10 HPET irq is routed to i8259 and then to MIPS CPU irq (cascade). After
  11 commit a3e6c1eff5 (MIPS: IRQ: Fix disable_irq on CPU IRQs), if without
  12 IRQF_NO_SUSPEND in cascade_irqaction, HPET interrupts will lost during
  13 suspend. The result is machine cannot be waken up.
  14
  15 Signed-off-by: Huacai Chen <chenhc@lemote.com>
  16 Cc: Steven J. Hill <Steven.Hill@imgtec.com>
  17 Cc: linux-mips@linux-mips.org
  18 Cc: Fuxin Zhang <zhangfx@lemote.com>
  19 Cc: Zhangjin Wu <wuzhangjin@gmail.com>
  20 Patchwork: https://patchwork.linux-mips.org/patch/9528/
  21 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
  22 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  23
  24 ---
  25  arch/mips/loongson/loongson-3/irq.c |    1 +
  26  1 file changed, 1 insertion(+)
  27
  28 --- a/arch/mips/loongson/loongson-3/irq.c
  29 +++ b/arch/mips/loongson/loongson-3/irq.c
  30 @@ -44,6 +44,7 @@ void mach_irq_dispatch(unsigned int pend
  31
  32  static struct irqaction cascade_irqaction = {
  33         .handler = no_action,
  34 +       .flags = IRQF_NO_SUSPEND,
  35         .name = "cascade",
  36  };
  37