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Subject[PATCH] genirq: handle shared irqs in handle_nested_irq()
Date
Allow shared irqs to work when nested threads are used for handling
threaded interrupts.

Signed-off-by: Rabin Vincent <rabin@rab.in>
---
kernel/irq/chip.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index baa5c4a..94a45a9 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -418,8 +418,8 @@ static inline void unmask_irq(struct irq_desc *desc)
void handle_nested_irq(unsigned int irq)
{
struct irq_desc *desc = irq_to_desc(irq);
+ irqreturn_t action_ret = IRQ_NONE;
struct irqaction *action;
- irqreturn_t action_ret;

might_sleep();

@@ -434,7 +434,10 @@ void handle_nested_irq(unsigned int irq)
desc->status |= IRQ_INPROGRESS;
raw_spin_unlock_irq(&desc->lock);

- action_ret = action->thread_fn(action->irq, action->dev_id);
+ do {
+ action_ret |= action->thread_fn(action->irq, action->dev_id);
+ action = action->next;
+ } while (action);
if (!noirqdebug)
note_interrupt(irq, desc, action_ret);

--
1.7.2.3


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