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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@signal11.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alan Ott 2013-10-05 23:52:24 -04:00 committed by David S. Miller
parent 4a4e1da83c
commit 40afbb6573
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ieee802154/mrf24j40.c
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@ -678,7 +678,7 @@ static int mrf24j40_probe(struct spi_device *spi)
ret = request_threaded_irq(spi->irq, ret = request_threaded_irq(spi->irq,
NULL, NULL,
mrf24j40_isr, mrf24j40_isr,
IRQF_TRIGGER_FALLING|IRQF_ONESHOT, IRQF_TRIGGER_LOW|IRQF_ONESHOT,
dev_name(&spi->dev), dev_name(&spi->dev),
devrec); devrec);