Merge tag 'iio-fixes-for-4.1a-take2' of git://git.kernel.org/pub/scm/linux/kernel...

Jonathan writes:

The usual mixed bag of fixes for IIO in the 4.1 cycle.

Second version of this pull request as a small fix to a fix turned
up before Greg pulled it for a cc10001 patch near the top of the tree.

One core fix

* Set updated for a iio kfifo was incorrectly set to false during a failed
  update, resulting in atttempts to repeat the failed operation appearing
  to succeed.

This time I've decided to list the driver fixes in alphabetical order rather
than 'randomly'.

* axp288_adc - a recent change added a check for valid info masks when
  reading channels from consumer drivers.
* bmp280 - temperature compensation was failing to read the tfine value, hence
  causing a temperature of 0 to always be returned and incorrect presure
  measurements.
* cc10001 - Fix channel number mapping when some channels are reserved for
  remote CPUs. Fix an issue with the use of the power-up/power-down register
  (basically wrong polarity). Fix an issue due to the missinterpretting the
  return value from regulator_get_voltage. Add a delay before the start bit
  as recommended for the hardware to avoid data corruption.
* hid pressure - fix channel spec of modfiied, but no modifier (which makes no
  sense!)
* hid proximity - fix channel spec of modified, but no modifier (which makes
  no sense!). Fix a memory leak in the probe function.
* mcp320x - occasional incorrect readings on dma using spi busses due to
  cacheline corruption. Fixed by forcing ___cacheline_aligned for the buffers.
* mma9551 - buffer overrun fix (miss specified maximum length of buffers)
* mma9553 - endian fix on status message. Add an enable element for activity
  channel. Input checking for activity period to avoid rather unpredictable
  results.
* spmi-vadc - fix an overflow in the output value normalization seen on some
  boards.
* st-snesors - oops due to use of a mutex that is not yet initialized during
  probe.
* xilinx adc - Some wrong register addresses, a wrong address for vccaux
  channel, incorrect scale on VREFP and incorrect sign on VREFN.

diff --combined drivers/iio/light/hid-sensor-prox.c
index 91ecc46,36a2de3..ef60bae
--- 1/drivers/iio/light/hid-sensor-prox.c
--- 2/drivers/iio/light/hid-sensor-prox.c
+++ b/drivers/iio/light/hid-sensor-prox.c
@@@ -43,8 -43,6 +43,6 @@@ struct prox_state 
  static const struct iio_chan_spec prox_channels[] = {
        {
                .type = IIO_PROXIMITY,
-               .modified = 1,
-               .channel2 = IIO_NO_MOD,
                .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
                .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
                BIT(IIO_CHAN_INFO_SCALE) |
@@@ -96,8 -94,7 +94,8 @@@ static int prox_read_raw(struct iio_de
                        *val = sensor_hub_input_attr_get_raw_value(
                                prox_state->common_attributes.hsdev,
                                HID_USAGE_SENSOR_PROX, address,
 -                              report_id);
 +                              report_id,
 +                              SENSOR_HUB_SYNC);
                        hid_sensor_power_state(&prox_state->common_attributes,
                                                false);
                } else {
@@@ -253,7 -250,6 +251,6 @@@ static int hid_prox_probe(struct platfo
        struct iio_dev *indio_dev;
        struct prox_state *prox_state;
        struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
-       struct iio_chan_spec *channels;
  
        indio_dev = devm_iio_device_alloc(&pdev->dev,
                                sizeof(struct prox_state));
@@@ -272,20 -268,21 +269,21 @@@
                return ret;
        }
  
-       channels = kmemdup(prox_channels, sizeof(prox_channels), GFP_KERNEL);
-       if (!channels) {
+       indio_dev->channels = kmemdup(prox_channels, sizeof(prox_channels),
+                                     GFP_KERNEL);
+       if (!indio_dev->channels) {
                dev_err(&pdev->dev, "failed to duplicate channels\n");
                return -ENOMEM;
        }
  
-       ret = prox_parse_report(pdev, hsdev, channels,
+       ret = prox_parse_report(pdev, hsdev,
+                               (struct iio_chan_spec *)indio_dev->channels,
                                HID_USAGE_SENSOR_PROX, prox_state);
        if (ret) {
                dev_err(&pdev->dev, "failed to setup attributes\n");
                goto error_free_dev_mem;
        }
  
-       indio_dev->channels = channels;
        indio_dev->num_channels =
                                ARRAY_SIZE(prox_channels);
        indio_dev->dev.parent = &pdev->dev;

diff --combined drivers/iio/pressure/hid-sensor-press.c
index 7bb8d4c,476a7d0..3cf0bd6
--- 1/drivers/iio/pressure/hid-sensor-press.c
--- 2/drivers/iio/pressure/hid-sensor-press.c
+++ b/drivers/iio/pressure/hid-sensor-press.c
@@@ -47,8 -47,6 +47,6 @@@ struct press_state 
  static const struct iio_chan_spec press_channels[] = {
        {
                .type = IIO_PRESSURE,
-               .modified = 1,
-               .channel2 = IIO_NO_MOD,
                .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
                .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
                BIT(IIO_CHAN_INFO_SCALE) |
@@@ -100,8 -98,7 +98,8 @@@ static int press_read_raw(struct iio_de
                        *val = sensor_hub_input_attr_get_raw_value(
                                press_state->common_attributes.hsdev,
                                HID_USAGE_SENSOR_PRESSURE, address,
 -                              report_id);
 +                              report_id,
 +                              SENSOR_HUB_SYNC);
                        hid_sensor_power_state(&press_state->common_attributes,
                                                false);
                } else {