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

Jonathan writes:

Third round of new stuff for IIO in the 3.16 cycle.

This (rather late) set consists only of fixes to patches earlier in the
cycle or minor fixes for other problems (such as randconfig build issues
picked up by Arnd).  I've included the general minor fixes here as it is
very late in the current cycle and they can all wait for the merge window.

* Recent change to hid-sensors introduced a possible infinite loop due to a
  typo. In the same series, a report interval unit read was added but in the
  case where the hardware doesn't support it a value of 0 would lead to some
  nasty issues.  The patch sets it to the specified default of msecs.
* Anon inodes were used by IIO without being explicitly selected.  This has
  been true for a long time so it clearly only effects rather unusual
  configurations (rand configs)
* at91 requires the input subsytem but this wasn't explicity in the Kconfig.
* A couple of parts supported by the max1363 driver were using the wrong
  iio_chan_spec arrays and hence would missreport their bit depths.  This has
  been there a long time and was never right so isn't a regression.

4 files changed, 26 insertions, 11 deletions

diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig
index 743485e4d6f8..345395e9dc6e 100644
--- a/drivers/iio/Kconfig
+++ b/drivers/iio/Kconfig
@@ -4,6 +4,7 @@
 
 menuconfig IIO
         tristate "Industrial I/O support"
+        select ANON_INODES
         help
           The industrial I/O subsystem provides a unified framework for
           drivers for many different types of embedded sensors using a
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 90f596db940d..a80d23628f14 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -110,6 +110,7 @@ config AD799X
 config AT91_ADC
         tristate "Atmel AT91 ADC"
         depends on ARCH_AT91
+        depends on INPUT
         select IIO_BUFFER
         select IIO_TRIGGERED_BUFFER
         select SYSFS
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index 9cf3229a7272..1b3b74be5c20 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -1252,8 +1252,8 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = {
                 .num_modes = ARRAY_SIZE(max1238_mode_list),
                 .default_mode = s0to11,
                 .info = &max1238_info,
-                .channels = max1238_channels,
-                .num_channels = ARRAY_SIZE(max1238_channels),
+                .channels = max1038_channels,
+                .num_channels = ARRAY_SIZE(max1038_channels),
         },
         [max11605] = {
                 .bits = 8,
@@ -1262,8 +1262,8 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = {
                 .num_modes = ARRAY_SIZE(max1238_mode_list),
                 .default_mode = s0to11,
                 .info = &max1238_info,
-                .channels = max1238_channels,
-                .num_channels = ARRAY_SIZE(max1238_channels),
+                .channels = max1038_channels,
+                .num_channels = ARRAY_SIZE(max1038_channels),
         },
         [max11606] = {
                 .bits = 10,
@@ -1312,8 +1312,8 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = {
                 .num_modes = ARRAY_SIZE(max1238_mode_list),
                 .default_mode = s0to11,
                 .info = &max1238_info,
-                .channels = max1238_channels,
-                .num_channels = ARRAY_SIZE(max1238_channels),
+                .channels = max1138_channels,
+                .num_channels = ARRAY_SIZE(max1138_channels),
         },
         [max11611] = {
                 .bits = 10,
@@ -1322,8 +1322,8 @@ static const struct max1363_chip_info max1363_chip_info_tbl[] = {
                 .num_modes = ARRAY_SIZE(max1238_mode_list),
                 .default_mode = s0to11,
                 .info = &max1238_info,
-                .channels = max1238_channels,
-                .num_channels = ARRAY_SIZE(max1238_channels),
+                .channels = max1138_channels,
+                .num_channels = ARRAY_SIZE(max1138_channels),
         },
         [max11612] = {
                 .bits = 12,
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
index 372964635ccf..403dd3d8986e 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
@@ -327,7 +327,7 @@ int hid_sensor_format_scale(u32 usage_id,
         *val0 = 1;
         *val1 = 0;
 
-        for (i = 0; ARRAY_SIZE(unit_conversion); ++i) {
+        for (i = 0; i < ARRAY_SIZE(unit_conversion); ++i) {
                 if (unit_conversion[i].usage_id == usage_id &&
                         unit_conversion[i].unit == attr_info->units) {
                         exp  = hid_sensor_convert_exponent(
@@ -343,15 +343,28 @@ int hid_sensor_format_scale(u32 usage_id,
 }
 EXPORT_SYMBOL(hid_sensor_format_scale);
 
-int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
+int hid_sensor_get_reporting_interval(struct hid_sensor_hub_device *hsdev,
                                         u32 usage_id,
                                         struct hid_sensor_common *st)
 {
-
         sensor_hub_input_get_attribute_info(hsdev,
                                         HID_FEATURE_REPORT, usage_id,
                                         HID_USAGE_SENSOR_PROP_REPORT_INTERVAL,
                                         &st->poll);
+        /* Default unit of measure is milliseconds */
+        if (st->poll.units == 0)
+                st->poll.units = HID_USAGE_SENSOR_UNITS_MILLISECOND;
+        return 0;
+
+}
+
+int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
+                                        u32 usage_id,
+                                        struct hid_sensor_common *st)
+{
+
+
+        hid_sensor_get_reporting_interval(hsdev, usage_id, st);
 
         sensor_hub_input_get_attribute_info(hsdev,
                                         HID_FEATURE_REPORT, usage_id,