From: Chuansheng Liu <chuansheng.liu@intel.com>
To: tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org, chuansheng.liu@intel.com
Subject: [PATCH] genirq: Add the IRQS_ONESHOT support for edge interrupt
Date: Tue, 18 Sep 2012 20:54:01 +0800 [thread overview]
Message-ID: <1347972841.4312.2.camel@cliu38-desktop-build> (raw)
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(-)
diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index eebd6d5..8e4e49a 100644
--- 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();
+ goto out_unlock;
+ } else
+ desc->irq_data.chip->irq_ack(&desc->irq_data);
do {
if (unlikely(!desc->action)) {
--
1.7.0.4
next reply other threads:[~2012-09-18 3:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-18 12:54 Chuansheng Liu [this message]
[not found] ` <CAK7N6vqKp0Tcdr0CP4grq12C8-Oe05+uCEyos=mLMitwpet+Zw@mail.gmail.com>
2012-09-18 4:51 ` Liu, Chuansheng
2012-09-18 7:13 ` anish singh
2012-09-18 7:18 ` Liu, Chuansheng
2012-09-18 7:21 ` Liu, Chuansheng
2012-09-18 9:08 ` anish singh
2012-09-18 13:57 ` Chuansheng Liu
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