Am 2015-08-08 um 23:01 schrieb gregkh@xxxxxxxxxxxxxxxxxxx:
>
> The patch below does not apply to the 4.1-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@xxxxxxxxxxxxxxx>.
The affected code hasn't been in mainline for 4.1 and older, therefore
the problem doesn't exist.
>
> thanks,
>
> greg k-h
>
> ------------------ original commit in Linus's tree ------------------
>
> From c5d0db0690ff0a963dc082e7645268c466bf9a84 Mon Sep 17 00:00:00 2001
> From: Martin Kepplinger <martink@xxxxxxxxx>
> Date: Sun, 5 Jul 2015 19:50:18 +0200
> Subject: [PATCH] iio: mma8452: use iio event type IIO_EV_TYPE_MAG
>
> IIO_EV_TYPE_THRESH in rising direction describes an event where the
> threshold is crossed in rising direction, positive or negative values
> being possible. This is not the case here.
>
> Since the threshold is no signed value and only the magnitude is compared,
> IIO_EV_TYPE_MAG is what describes the behaviour of these devices, see the
> sysfs-bus-iio ABI Documentation.
>
> Signed-off-by: Martin Kepplinger <martin.kepplinger@xxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Christoph Muellner <christoph.muellner@xxxxxxxxxxxxxxxxxxxxx>
> Cc: <Stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Jonathan Cameron <jic23@xxxxxxxxxx>
>
> diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
> index e8e2077c7244..13ea1ea23328 100644
> --- a/drivers/iio/accel/mma8452.c
> +++ b/drivers/iio/accel/mma8452.c
> @@ -557,21 +557,21 @@ static void mma8452_transient_interrupt(struct iio_dev *indio_dev)
> if (src & MMA8452_TRANSIENT_SRC_XTRANSE)
> iio_push_event(indio_dev,
> IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X,
> - IIO_EV_TYPE_THRESH,
> + IIO_EV_TYPE_MAG,
> IIO_EV_DIR_RISING),
> ts);
>
> if (src & MMA8452_TRANSIENT_SRC_YTRANSE)
> iio_push_event(indio_dev,
> IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_Y,
> - IIO_EV_TYPE_THRESH,
> + IIO_EV_TYPE_MAG,
> IIO_EV_DIR_RISING),
> ts);
>
> if (src & MMA8452_TRANSIENT_SRC_ZTRANSE)
> iio_push_event(indio_dev,
> IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_Z,
> - IIO_EV_TYPE_THRESH,
> + IIO_EV_TYPE_MAG,
> IIO_EV_DIR_RISING),
> ts);
> }
> @@ -644,7 +644,7 @@ static int mma8452_reg_access_dbg(struct iio_dev *indio_dev,
>
> static const struct iio_event_spec mma8452_transient_event[] = {
> {
> - .type = IIO_EV_TYPE_THRESH,
> + .type = IIO_EV_TYPE_MAG,
> .dir = IIO_EV_DIR_RISING,
> .mask_separate = BIT(IIO_EV_INFO_ENABLE),
> .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
>
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