From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932776Ab2IRD4y (ORCPT ); Mon, 17 Sep 2012 23:56:54 -0400 Received: from mga01.intel.com ([192.55.52.88]:26119 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932728Ab2IRD4x (ORCPT ); Mon, 17 Sep 2012 23:56:53 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.80,439,1344236400"; d="scan'208";a="223374605" Subject: [PATCH] genirq: Add the IRQS_ONESHOT support for edge interrupt From: Chuansheng Liu To: tglx@linutronix.de Cc: linux-kernel@vger.kernel.org, chuansheng.liu@intel.com Content-Type: text/plain; charset="UTF-8" Date: Tue, 18 Sep 2012 20:54:01 +0800 Message-ID: <1347972841.4312.2.camel@cliu38-desktop-build> Mime-Version: 1.0 X-Mailer: Evolution 2.28.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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