linux-kernel - [PATCH -next] rtc-twl: pass IRQF_ONESHOT to request_threaded

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Date:	Thu, 17 May 2012 11:35:49 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Alessandro Zummo <a.zummo@...ertech.it>,
	Grant Likely <grant.likely@...retlab.ca>
Cc:	rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org,
	Ming Lei <ming.lei@...onical.com>
Subject: [PATCH -next] rtc-twl: pass IRQF_ONESHOT to request_threaded_irq

The flag of IRQF_ONESHOT should be passed to request_threaded_irq,
otherwise the following failure message will be dumped because
hardware handler is defined as NULL:

[    3.329864] genirq: Threaded irq requested with handler=NULL and
!ONESHOT for irq 363
[    3.338226] twl_rtc twl_rtc: IRQ is not free.
[    3.346099] twl_rtc: probe of twl_rtc failed with error -22

The patch fixes the rtc-twl probe failure.

Signed-off-by: Ming Lei <ming.lei@...onical.com>
---
 drivers/rtc/rtc-twl.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 258abea..c5d06fe 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -510,7 +510,7 @@ static int __devinit twl_rtc_probe(struct platform_device *pdev)
 	}
 
 	ret = request_threaded_irq(irq, NULL, twl_rtc_interrupt,
-				   IRQF_TRIGGER_RISING,
+				   IRQF_TRIGGER_RISING | IRQF_ONESHOT,
 				   dev_name(&rtc->dev), rtc);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "IRQ is not free.\n");
-- 
1.7.9.5

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