Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.17 13/46] iio: mma8452: Fix ignoring MMA8452_INT_DRDY | Date | Fri, 6 Jul 2018 07:46:34 +0200 |
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4.17-stable review patch. If anyone has any objections, please let me know.
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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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