linux-stable.git/drivers/iio, branch linux-4.8.y

iio: st_sensors: fix scale configuration for h3lis331dl

2016-11-18T09:51:48+00:00

commit d304286abbbe7ed6228a553a56ba054e900907eb upstream.

fix scale configuration/parsing for h3lis331dl accel driver
when sensitivity is higher than 1(m/s^2)/digit

Signed-off-by: Lorenzo Bianconi 
Fixes: 1e52fefc9b0c ("iio: accel: Add support for the h3lis331dl accelerometer")
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: orientation: hid-sensor-rotation: Add PM function (fix non working driver)

2016-11-18T09:51:47+00:00

commit 8af644a7d6846f48d6b72be5d4a3c6eb16bd33c8 upstream.

This fix makes newer ISH hubs work. Previous ones worked by lucky
coincidence.

Rotation sensor function does not work due to miss PM function.
Add common hid sensor iio pm function for rotation sensor.

Further clarification from Srinivas:

If CONFIG_PM is not defined, then this prevents this sensor to
function. So above commit caused this.

This sensor was supposed to be always on to trigger wake up in prior
external hubs. But with the new ISH hub this is not the case.

Signed-off-by: Song Hongyan 
Fixes: 2b89635e9a9e ("iio: hid_sensor_hub: Common PM functions")
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: hid-sensors: Increase the precision of scale to fix wrong reading interpretation.

2016-11-18T09:51:47+00:00

commit 6f77199e9e4b84340c751c585691d7642a47d226 upstream.

While testing, it was observed that on some platforms the scale value
from iio sysfs for gyroscope is always 0 (E.g. Yoga 260). This results
in the final angular velocity component values to be zeros.

This is caused by insufficient precision of scale value displayed in sysfs.
If the precision is changed to nano from current micro, then this is
sufficient to display the scale value on this platform.
Since this can be a problem for all other HID sensors, increase scale
precision of all HID sensors to nano from current micro.

Results on Yoga 260:

name		scale before	scale now
--------------------------------------------
gyro_3d		0.000000	0.000000174
als			0.001000	0.001000000
magn_3d		0.000001	0.000001000
accel_3d		0.000009	0.000009806

Signed-off-by: Song Hongyan 
Acked-by: Srinivas Pandruvada 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio:chemical:atlas-ph-sensor: Fix use of 32 bit int to hold 16 bit big endian value

2016-11-10T15:38:50+00:00

commit d1fe85ec7702917f2f1515b4c421d5d4792201a0 upstream.

This will result in a random value being reported on big endian architectures.
(thanks to Lars-Peter Clausen for pointing out the effects of this bug)

Only effects a value printed to the log, but as this reports the settings of
the probe in question it may be of direct interest to users.

Also, fixes the following sparse endianness warnings:

drivers/iio/chemical/atlas-ph-sensor.c:215:9: warning: cast to restricted __be16
drivers/iio/chemical/atlas-ph-sensor.c:215:9: warning: cast to restricted __be16
drivers/iio/chemical/atlas-ph-sensor.c:215:9: warning: cast to restricted __be16
drivers/iio/chemical/atlas-ph-sensor.c:215:9: warning: cast to restricted __be16
drivers/iio/chemical/atlas-ph-sensor.c:215:9: warning: cast to restricted __be16
drivers/iio/chemical/atlas-ph-sensor.c:215:9: warning: cast to restricted __be16
drivers/iio/chemical/atlas-ph-sensor.c:215:9: warning: cast to restricted __be16
drivers/iio/chemical/atlas-ph-sensor.c:215:9: warning: cast to restricted __be16

Signed-off-by: Sandhya Bankar 
Fixes: e8dd92bfbff25 ("iio: chemical: atlas-ph-sensor: add EC feature")
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: light: us5182d: Add missing error code assignment before test

2016-10-31T11:02:10+00:00

commit 281269f8a0b00f5c95de5158e8595ed51bdb4b0a upstream.

It is likely that checking the result of 'pm_runtime_set_active' is
expected here.

Fixes: f0e5f57d3ac2 ("iio: light: us8152d: Add power management support")

Signed-off-by: Christophe JAILLET 
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

iio: ad5755: fix off-by-one on devnr limit check

2016-10-31T11:02:10+00:00

commit 9d47964bfd471f0dd4c89f28556aec68bffa0020 upstream.

The comparison for devnr limits is off-by-one, the current check
allows 0 to AD5755_NUM_CHANNELS and the limit should be in fact
0 to AD5755_NUM_CHANNELS - 1.  This can lead to an out of bounds
write to pdata->dac[devnr]. Fix this by replacing > with >= on the
comparison.

Signed-off-by: Colin Ian King 
Fixes: c947459979c6 ("iio: ad5755: add support for dt bindings")
Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

Merge tag 'iio-fixes-for-4.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

2016-09-09T11:44:37+00:00

Jonathan writes:

Second set of IIO fixes for the 4.8 cycle.

We have a big rework of the kxsd9 driver queued up behind the fix below and
a fix for a recent fix that was marked for stable.
Hence this fix series is perhaps a little more urgent than average for IIO.
* core
  - a fix for a fix in the last set.  The recent fix for blocking ops when
   ! task running left a path (unlikely one) in which the function return
   value was not set - so initialise it to 0.
  - The IIO_TYPE_FRACTIONAL code previously didn't cope with negative
  fractions.  Turned out a fix for this was in Analog's tree but hadn't made
  it upstream.
* bmc150
  - reset chip at init time. At least one board out there ends up coming up
  in an unstable state due to noise during power up.  The reset does no
  harm on other boards.
* kxsd9
  - Fix a bug in the reported scaling due to failing to set the integer
  part to 0.
* hid-sensors-pressure
  - Output was in the wrong units to comply with the IIO ABI.
* tools
  - iio_generic_buffer: Fix the trigger-less mode by ensuring we don't fault
    out for having no trigger when we explicitly said we didn't want to have
    one.

iio:core: fix IIO_VAL_FRACTIONAL sign handling

2016-09-05T20:21:32+00:00

7985e7c100 ("iio: Introduce a new fractional value type") introduced a
new IIO_VAL_FRACTIONAL value type meant to represent rational type numbers
expressed by a numerator and denominator combination.

Formating of IIO_VAL_FRACTIONAL values relies upon do_div() usage. This
fails handling negative values properly since parameters are reevaluated
as unsigned values.
Fix this by using div_s64_rem() instead. Computed integer part will carry
properly signed value. Formatted fractional part will always be positive.

Fixes: 7985e7c100 ("iio: Introduce a new fractional value type")
Signed-off-by: Gregor Boirie 
Reviewed-by: Lars-Peter Clausen 
Cc: 
Signed-off-by: Jonathan Cameron

iio: ensure ret is initialized to zero before entering do loop

2016-09-05T20:00:14+00:00

A recent fix to iio_buffer_read_first_n_outer removed ret from being set by
a return from wait_event_interruptible and also added a continue in a loop
which causes the variable ret to not be set when it reaches the end of the
loop.  Fix this by initializing ret to zero.

Also remove extraneous white space at the end of the loop.

Fixes: fcf68f3c0bb2a5 ("fix sched WARNING "do not call blocking ops when !TASK_RUNNING")
Signed-off-by: Colin Ian King 
Cc: 
Signed-off-by: Jonathan Cameron

Merge tag 'char-misc-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2016-09-03T18:38:43+00:00

Pull char/misc driver fixes from Greg KH:
 "Here are a number of small driver fixes for 4.8-rc5.

  The largest thing here is deleting an obsolete driver,
  drivers/misc/bh1780gli.c, as the functionality of it was replaced by
  an iio driver a while ago.

  The other fixes are things that have been reported, or reverts of
  broken stuff (the binder change).  All of these changes have been in
  linux-next for a while with no reported issues"

* tag 'char-misc-4.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  thunderbolt: Don't declare Falcon Ridge unsupported
  thunderbolt: Add support for INTEL_FALCON_RIDGE_2C controller.
  thunderbolt: Fix resume quirk for Falcon Ridge 4C.
  lkdtm: Mark lkdtm_rodata_do_nothing() notrace
  mei: me: disable driver on SPT SPS firmware
  Revert "android: binder: fix dangling pointer comparison"
  drivers/iio/light/Kconfig: SENSORS_BH1780 cleanup
  android: binder: fix dangling pointer comparison
  misc: delete bh1780 driver