iio: accel: bmc150: Always restore device to normal mode after suspend-resume

commit e59e18989c68a8d7941005f81ad6abc4ca682de0 upstream.

After probe we would put the device in normal mode, after a runtime
suspend-resume we would put it back in normal mode. But for a regular
suspend-resume we would only put it back in normal mode if triggers
or events have been requested.  This is not consistent and breaks
reading raw values after a suspend-resume.

This commit changes the regular resume path to also unconditionally put
the device back in normal mode, fixing reading of raw values not working
after a regular suspend-resume cycle.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index fa24d519661596de415e01490b36a36eff63fc28..c7122919a8c0eb3f6ddcdabe1d11c893045404ad 100644 (file)
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -194,7 +194,6 @@ struct bmc150_accel_data {
        struct device *dev;
        int irq;
        struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
-       atomic_t active_intr;
        struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
        struct mutex mutex;
        u8 fifo_mode, watermark;
@@ -489,11 +488,6 @@ static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data, int i,
                goto out_fix_power_state;
        }
 
-       if (state)
-               atomic_inc(&data->active_intr);
-       else
-               atomic_dec(&data->active_intr);
-
        return 0;
 
 out_fix_power_state:
@@ -1704,8 +1698,7 @@ static int bmc150_accel_resume(struct device *dev)
        struct bmc150_accel_data *data = iio_priv(indio_dev);
 
        mutex_lock(&data->mutex);
-       if (atomic_read(&data->active_intr))
-               bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_NORMAL, 0);
+       bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_NORMAL, 0);
        bmc150_accel_fifo_set_mode(data);
        mutex_unlock(&data->mutex);