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SubjectRe: [PATCH] genirq: Add the IRQS_ONESHOT support for edge interrupt
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Sorry, update the patch.

On Tue, 2012-09-18 at 20:54 +0800, Chuansheng Liu wrote:
> In handle_edge_irq(), currently do not care about the flag IRQS_ONESHOT,
> but there are many edge interrupt handler with irq thread need it indeed,
> so implement here.
>
> Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
> ---
> kernel/irq/chip.c | 8 +++++++-
> 1 files changed, 7 insertions(+), 1 deletions(-)
>

In handle_edge_irq(), currently do not care about the flag IRQS_ONESHOT,
but there are many edge interrupt handler with irq thread need it indeed,
so implement here.

Signed-off-by: liu chuansheng <chuansheng.liu@intel.com>
---
kernel/irq/chip.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
mode change 100644 => 100755 kernel/irq/chip.c

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
old mode 100644
new mode 100755
index eebd6d5..04da0d7
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -497,7 +497,13 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
kstat_incr_irqs_this_cpu(irq, desc);

/* Start handling the irq */
- desc->irq_data.chip->irq_ack(&desc->irq_data);
+ if (desc->istate & IRQS_ONESHOT) {
+ mask_ack_irq(desc);
+ handle_irq_event(desc);
+ cond_unmask_irq(desc);
+ goto out_unlock;
+ } else
+ desc->irq_data.chip->irq_ack(&desc->irq_data);

do {
if (unlikely(!desc->action)) {
--
1.7.0.4




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