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Subject[PATCH 4.17 13/46] iio: mma8452: Fix ignoring MMA8452_INT_DRDY
Date
4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Leonard Crestez <leonard.crestez@nxp.com>

commit b02ec67a8e38875cdc5f9214be885022f11c0017 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: 605f72de137a ("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>

---
drivers/iio/accel/mma8452.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -1034,7 +1034,7 @@ static irqreturn_t mma8452_interrupt(int
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) {

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