netdev - [PATCH beta 1] 3/3] mrf24j40: Use level-triggered interrupts

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Date:	Tue, 21 May 2013 22:01:20 -0400
From:	Alan Ott <alan@...nal11.us>
To:	david@...weele.net
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-zigbee-devel@...ts.sourceforge.net,
	Alan Ott <alan@...nal11.us>
Subject: [PATCH beta 1] 3/3] mrf24j40: Use level-triggered interrupts

The mrf24j40 generates level interrupts. There are rare cases where it
appears that the interrupt line never gets de-asserted between interrupts,
causing interrupts to be lost, and causing a hung device from the driver's
perspective.  Switching the driver to interpret these interrupts as
level-triggered fixes this issue.

Signed-off-by: Alan Ott <alan@...nal11.us>
---
 drivers/net/ieee802154/mrf24j40.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ieee802154/mrf24j40.c b/drivers/net/ieee802154/mrf24j40.c
index a55ab8d..d59dbff 100644
--- a/drivers/net/ieee802154/mrf24j40.c
+++ b/drivers/net/ieee802154/mrf24j40.c
@@ -685,7 +685,7 @@ static int mrf24j40_probe(struct spi_device *spi)
 	ret = request_threaded_irq(spi->irq,
 				   NULL,
 				   mrf24j40_isr,
-				   IRQF_TRIGGER_FALLING|IRQF_ONESHOT,
+				   IRQF_TRIGGER_LOW|IRQF_ONESHOT,
 				   dev_name(&spi->dev),
 				   devrec);
 
-- 
1.7.11.2

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