Merge tag 'iio-fixes-for-3.16e' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

Fifth set of fixes for IIO in the 3.16 cycle.

One nasty one that has been around a long time and a couple of non compliant
ABI fixes.

* The demux code used to split out desired channels for devices that only
  support reading sets of channels at one time had a bug where it was
  building it's conversion tables against the wrong bitmap resulting in
  it never actually demuxing anything.  This is an old bug, but will be
  effecting an increasing number of drivers as it is often used to avoid
  some fiddly code in the individual drivers.

* bma180 and mma8452 weren't obeying the ABI wrt to units for acceleration.
  Were in G rather than m/s^2. A little input check was missing from bma180
  that might lead to acceptance of incorrect values.  This last one is minor
  but might lead to incorrect userspace code working and problems in the
  future.

drivers/iio/accel/bma180.c

@@ -68,13 +68,13 @@
 /* Defaults values */
 #define BMA180_DEF_PMODE	0
 #define BMA180_DEF_BW		20
-#define BMA180_DEF_SCALE	250
+#define BMA180_DEF_SCALE	2452
 
 /* Available values for sysfs */
 #define BMA180_FLP_FREQ_AVAILABLE \
 	"10 20 40 75 150 300"
 #define BMA180_SCALE_AVAILABLE \
-	"0.000130 0.000190 0.000250 0.000380 0.000500 0.000990 0.001980"
+	"0.001275 0.001863 0.002452 0.003727 0.004903 0.009709 0.019417"
 
 struct bma180_data {
 	struct i2c_client *client;
@@ -94,7 +94,7 @@ enum bma180_axis {
 };
 
 static int bw_table[] = { 10, 20, 40, 75, 150, 300 }; /* Hz */
-static int scale_table[] = { 130, 190, 250, 380, 500, 990, 1980 };
+static int scale_table[] = { 1275, 1863, 2452, 3727, 4903, 9709, 19417 };
 
 static int bma180_get_acc_reg(struct bma180_data *data, enum bma180_axis axis)
 {
@@ -376,6 +376,8 @@ static int bma180_write_raw(struct iio_dev *indio_dev,
 		mutex_unlock(&data->mutex);
 		return ret;
 	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		if (val2)
+			return -EINVAL;
 		mutex_lock(&data->mutex);
 		ret = bma180_set_bw(data, val);
 		mutex_unlock(&data->mutex);

drivers/iio/industrialio-buffer.c

@@ -966,7 +966,7 @@ static int iio_buffer_update_demux(struct iio_dev *indio_dev,
 
 	/* Now we have the two masks, work from least sig and build up sizes */
 	for_each_set_bit(out_ind,
-			 indio_dev->active_scan_mask,
+			 buffer->scan_mask,
 			 indio_dev->masklength) {
 		in_ind = find_next_bit(indio_dev->active_scan_mask,
 				       indio_dev->masklength,