target/linux/orion/patches/008-top-level_irqs_are_level-triggered.patch

   1 Make it clear that Orion top-level IRQs are level-triggered.  This
   2 means that we don't need an ->ack() handler, or at least, we don't
   3 need the ->ack() handler (or the acking part of the ->mask_ack()
   4 handler) to actually do anything.
   5
   6 Given that, we might as well point our ->mask_ack() handler at the
   7 ->mask() handler instead of providing a dummy ->ack() handler, since
   8 providing a ->mask_ack() handler on level IRQ sources will prevent
   9 ->ack() from ever being called.
  10
  11 Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
  12 ---
  13  arch/arm/plat-orion/irq.c |    3 ++-
  14  1 files changed, 2 insertions(+), 1 deletions(-)
  15
  16 --- a/arch/arm/plat-orion/irq.c
  17 +++ b/arch/arm/plat-orion/irq.c
  18 @@ -36,8 +36,8 @@
  19
  20  static struct irq_chip orion_irq_chip = {
  21         .name           = "orion_irq",
  22 -       .ack            = orion_irq_mask,
  23         .mask           = orion_irq_mask,
  24 +       .mask_ack       = orion_irq_mask,
  25         .unmask         = orion_irq_unmask,
  26  };
  27
  28 @@ -59,6 +59,7 @@
  29                 set_irq_chip(irq, &orion_irq_chip);
  30                 set_irq_chip_data(irq, maskaddr);
  31                 set_irq_handler(irq, handle_level_irq);
  32 +               irq_desc[irq].status |= IRQ_LEVEL;
  33                 set_irq_flags(irq, IRQF_VALID);
  34         }
  35  }