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

From: Alan Ott
Date: Tue May 21 2013 - 22:01:37 EST


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@xxxxxxxxxxx>
---
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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/