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iio: mma8452: Fix ignoring MMA8452_INT_DRDY

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commit b02ec67a8e upstream.

Interrupts are ignored if no event bit is set in the status status
register and this breaks the buffer interface. No data is shown when
running "iio_generic_buffer -n mma8451 -a" and interrupt counts go
crazy.

Fix by not returning IRQ_NONE if DRDY is set.

Fixes: 605f72de13 ("iio: accel: mma8452: improvements to handle
multiple events")

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Leonard Crestez
2018-06-07 21:52:50 +03:00
committed by Greg Kroah-Hartman
parent 129cdc94d4
commit 19dc0ed2e4
1 changed files with 1 additions and 1 deletions
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2
drivers/iio/accel/mma8452.c
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@@ -1034,7 +1034,7 @@ static irqreturn_t mma8452_interrupt(int irq, void *p)
if (src < 0)
return IRQ_NONE;
if (!(src & data->chip_info->enabled_events))
if (!(src & (data->chip_info->enabled_events | MMA8452_INT_DRDY)))
return IRQ_NONE;
if (src & MMA8452_INT_DRDY) {