Commit graph

2884 commits

Author SHA1 Message Date
Zheyu Ma
a4ed806c53 iio: magnetometer: ak8975: Fix the error handling in ak8975_power_on()
commit 3a26787dac upstream.

When the driver fails to enable the regulator 'vid', we will get the
following splat:

[   79.955610] WARNING: CPU: 5 PID: 441 at drivers/regulator/core.c:2257 _regulator_put+0x3ec/0x4e0
[   79.959641] RIP: 0010:_regulator_put+0x3ec/0x4e0
[   79.967570] Call Trace:
[   79.967773]  <TASK>
[   79.967951]  regulator_put+0x1f/0x30
[   79.968254]  devres_release_group+0x319/0x3d0
[   79.968608]  i2c_device_probe+0x766/0x940

Fix this by disabling the 'vdd' regulator when failing to enable 'vid'
regulator.

Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Link: https://lore.kernel.org/r/20220409034849.3717231-2-zheyuma97@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-12 12:17:05 +02:00
Michael Hennerich
8d74584057 iio: dac: ad5446: Fix read_raw not returning set value
commit 89a01cd688 upstream.

read_raw should return the un-scaled value.

Fixes: 5e06bdfb46 ("staging:iio:dac:ad5446: Return cached value for 'raw' attribute")
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220406105620.1171340-1-michael.hennerich@analog.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-12 12:17:05 +02:00
Zizhuang Deng
c6622726c2 iio: dac: ad5592r: Fix the missing return value.
commit b55b38f7cc upstream.

The third call to `fwnode_property_read_u32` did not record
the return value, resulting in `channel_offstate` possibly
being assigned the wrong value.

Fixes: 56ca9db862 ("iio: dac: Add support for the AD5592R/AD5593R ADCs/DACs")
Signed-off-by: Zizhuang Deng <sunsetdzz@gmail.com>
Link: https://lore.kernel.org/r/20220310125450.4164164-1-sunsetdzz@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-12 12:17:05 +02:00
Jiasheng Jiang
35b1cf7e2f iio: adc: Add check for devm_request_threaded_irq
[ Upstream commit b30537a4ce ]

As the potential failure of the devm_request_threaded_irq(),
it should be better to check the return value and return
error if fails.

Fixes: fa659a40b8 ("iio: adc: twl6030-gpadc: Use devm_* API family")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Link: https://lore.kernel.org/r/20220224062849.3280966-1-jiasheng@iscas.ac.cn
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-20 09:08:19 +02:00
Liam Beguin
969a2985a1 iio: inkern: make a best effort on offset calculation
commit ca85123354 upstream.

iio_convert_raw_to_processed_unlocked() assumes the offset is an
integer. Make a best effort to get a valid offset value for fractional
cases without breaking implicit truncations.

Fixes: 48e44ce0f8 ("iio:inkern: Add function to read the processed value")
Signed-off-by: Liam Beguin <liambeguin@gmail.com>
Reviewed-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220108205319.2046348-4-liambeguin@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-20 09:08:09 +02:00
Liam Beguin
40e7d18871 iio: inkern: apply consumer scale when no channel scale is available
commit 14b457fdde upstream.

When a consumer calls iio_read_channel_processed() and no channel scale
is available, it's assumed that the scale is one and the raw value is
returned as expected.

On the other hand, if the consumer calls iio_convert_raw_to_processed()
the scaling factor requested by the consumer is not applied.

This for example causes the consumer to process mV when expecting uV.
Make sure to always apply the scaling factor requested by the consumer.

Fixes: adc8ec5ff1 ("iio: inkern: pass through raw values if no scaling")
Signed-off-by: Liam Beguin <liambeguin@gmail.com>
Reviewed-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220108205319.2046348-3-liambeguin@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-20 09:08:09 +02:00
Liam Beguin
bfa6a051e7 iio: inkern: apply consumer scale on IIO_VAL_INT cases
commit 1bca97ff95 upstream.

When a consumer calls iio_read_channel_processed() and the channel has
an integer scale, the scale channel scale is applied and the processed
value is returned as expected.

On the other hand, if the consumer calls iio_convert_raw_to_processed()
the scaling factor requested by the consumer is not applied.

This for example causes the consumer to process mV when expecting uV.
Make sure to always apply the scaling factor requested by the consumer.

Fixes: 48e44ce0f8 ("iio:inkern: Add function to read the processed value")
Signed-off-by: Liam Beguin <liambeguin@gmail.com>
Reviewed-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220108205319.2046348-2-liambeguin@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-04-20 09:08:09 +02:00
Christophe JAILLET
c5723b422f iio: adc: men_z188_adc: Fix a resource leak in an error handling path
commit e0a2e37f30 upstream.

If iio_device_register() fails, a previous ioremap() is left unbalanced.

Update the error handling path and add the missing iounmap() call, as
already done in the remove function.

Fixes: 74aeac4da6 ("iio: adc: Add MEN 16z188 ADC driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/320fc777863880247c2aff4a9d1a54ba69abf080.1643445149.git.christophe.jaillet@wanadoo.fr
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-03-02 11:33:56 +01:00
Yang Yingliang
3899700dda iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove
commit 70c9774e18 upstream.

When ACPI type is ACPI_SMO8500, the data->dready_trig will not be set, the
memory allocated by iio_triggered_buffer_setup() will not be freed, and cause
memory leak as follows:

unreferenced object 0xffff888009551400 (size 512):
  comm "i2c-SMO8500-125", pid 911, jiffies 4294911787 (age 83.852s)
  hex dump (first 32 bytes):
    02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 20 e2 e5 c0 ff ff ff ff  ........ .......
  backtrace:
    [<0000000041ce75ee>] kmem_cache_alloc_trace+0x16d/0x360
    [<000000000aeb17b0>] iio_kfifo_allocate+0x41/0x130 [kfifo_buf]
    [<000000004b40c1f5>] iio_triggered_buffer_setup_ext+0x2c/0x210 [industrialio_triggered_buffer]
    [<000000004375b15f>] kxcjk1013_probe+0x10c3/0x1d81 [kxcjk_1013]

Fix it by remove data->dready_trig condition in probe and remove.

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: a25691c1f9 ("iio: accel: kxcjk1013: allow using an external trigger")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Cc: <Stable@vger.kernel.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20211025124159.2700301-1-yangyingliang@huawei.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:57 +01:00
Evgeny Boger
e2471d25b6 iio: adc: axp20x_adc: fix charging current reporting on AXP22x
commit 92beafb76a upstream.

Both the charging and discharging currents on AXP22x are stored as
12-bit integers, in accordance with the datasheet.
It's also confirmed by vendor BSP (axp20x_adc.c:axp22_icharge_to_mA).

The scale factor of 0.5 is never mentioned in datasheet, nor in the
vendor source code. I think it was here to compensate for
erroneous addition bit in register width.

Tested on custom A40i+AXP221s board with external ammeter as
a reference.

Fixes: 0e34d5de96 ("iio: adc: add support for X-Powers AXP20X and AXP22X PMICs ADCs")
Signed-off-by: Evgeny Boger <boger@wirenboard.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20211116213746.264378-1-boger@wirenboard.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:57 +01:00
Lars-Peter Clausen
e5f8403cc8 iio: dln2: Check return value of devm_iio_trigger_register()
commit 90751fb9f2 upstream.

Registering a trigger can fail and the return value of
devm_iio_trigger_register() must be checked. Otherwise undefined behavior
can occur when the trigger is used.

Fixes: 7c0299e879 ("iio: adc: Add support for DLN2 ADC")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211101133043.6974-1-lars@metafoo.de
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:57 +01:00
Noralf Trønnes
9be282312a iio: dln2-adc: Fix lockdep complaint
commit 59f9286817 upstream.

When reading the voltage:

$ cat /sys/bus/iio/devices/iio\:device0/in_voltage0_raw

Lockdep complains:

[  153.910616] ======================================================
[  153.916918] WARNING: possible circular locking dependency detected
[  153.923221] 5.14.0+ #5 Not tainted
[  153.926692] ------------------------------------------------------
[  153.932992] cat/717 is trying to acquire lock:
[  153.937525] c2585358 (&indio_dev->mlock){+.+.}-{3:3}, at: iio_device_claim_direct_mode+0x28/0x44
[  153.946541]
               but task is already holding lock:
[  153.952487] c2585860 (&dln2->mutex){+.+.}-{3:3}, at: dln2_adc_read_raw+0x94/0x2bc [dln2_adc]
[  153.961152]
               which lock already depends on the new lock.

Fix this by not calling into the iio core underneath the dln2->mutex lock.

Fixes: 7c0299e879 ("iio: adc: Add support for DLN2 ADC")
Cc: Jack Andersen <jackoalan@gmail.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://lore.kernel.org/r/20211018113731.25723-1-noralf@tronnes.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:57 +01:00
Lars-Peter Clausen
18bb11826b iio: itg3200: Call iio_trigger_notify_done() on error
commit 67fe29583e upstream.

IIO trigger handlers must call iio_trigger_notify_done() when done. This
must be done even when an error occurred. Otherwise the trigger will be
seen as busy indefinitely and the trigger handler will never be called
again.

The itg3200 driver neglects to call iio_trigger_notify_done() when there is
an error reading the gyro data. Fix this by making sure that
iio_trigger_notify_done() is included in the error exit path.

Fixes: 9dbf091da0 ("iio: gyro: Add itg3200")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211101144055.13858-1-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:57 +01:00
Lars-Peter Clausen
8f433a82f0 iio: kxsd9: Don't return error code in trigger handler
commit 45febe0d63 upstream.

IIO trigger handlers need to return one of the irqreturn_t values.
Returning an error code is not supported.

The kxsd9 interrupt handler returns an error code if reading the data
registers fails. In addition when exiting due to an error the trigger
handler does not call `iio_trigger_notify_done()`. Which when not done
keeps the triggered disabled forever.

Modify the code so that the function returns a valid irqreturn_t value as
well as calling `iio_trigger_notify_done()` on all exit paths.

Since we can't return the error code make sure to at least log it as part
of the error message.

Fixes: 0427a106a9 ("iio: accel: kxsd9: Add triggered buffer handling")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20211024171251.22896-2-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:57 +01:00
Lars-Peter Clausen
198d32d571 iio: ltr501: Don't return error code in trigger handler
commit ef9d67fa72 upstream.

IIO trigger handlers need to return one of the irqreturn_t values.
Returning an error code is not supported.

The ltr501 interrupt handler gets this right for most error paths, but
there is one case where it returns the error code.

In addition for this particular case the trigger handler does not call
`iio_trigger_notify_done()`. Which when not done keeps the triggered
disabled forever.

Modify the code so that the function returns a valid irqreturn_t value as
well as calling `iio_trigger_notify_done()` on all exit paths.

Fixes: 2690be9051 ("iio: Add Lite-On ltr501 ambient light / proximity sensor driver")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211024171251.22896-1-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:56 +01:00
Lars-Peter Clausen
794c0898f6 iio: mma8452: Fix trigger reference couting
commit cd00822357 upstream.

The mma8452 driver directly assigns a trigger to the struct iio_dev. The
IIO core when done using this trigger will call `iio_trigger_put()` to drop
the reference count by 1.

Without the matching `iio_trigger_get()` in the driver the reference count
can reach 0 too early, the trigger gets freed while still in use and a
use-after-free occurs.

Fix this by getting a reference to the trigger before assigning it to the
IIO device.

Fixes: ae6d9ce056 ("iio: mma8452: Add support for interrupt driven triggers.")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211024092700.6844-1-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:56 +01:00
Lars-Peter Clausen
125bf4c584 iio: stk3310: Don't return error code in interrupt handler
commit 8e1eeca5af upstream.

Interrupt handlers must return one of the irqreturn_t values. Returning a
error code is not supported.

The stk3310 event interrupt handler returns an error code when reading the
flags register fails.

Fix the implementation to always return an irqreturn_t value.

Fixes: 3dd477acbd ("iio: light: Add threshold interrupt support for STK3310")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211024171251.22896-3-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:56 +01:00
Alyssa Ross
0d66f0c5a8 iio: trigger: stm32-timer: fix MODULE_ALIAS
commit 893621e060 upstream.

modprobe can't handle spaces in aliases.

Fixes: 93fbe91b55 ("iio: Add STM32 timer trigger driver")
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Link: https://lore.kernel.org/r/20211125182850.2645424-1-hi@alyssa.is
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:56 +01:00
Lars-Peter Clausen
69357cb0b6 iio: trigger: Fix reference counting
commit a827a49846 upstream.

In viio_trigger_alloc() device_initialize() is used to set the initial
reference count of the trigger to 1. Then another get_device() is called on
trigger. This sets the reference count to 2 before the trigger is returned.

iio_trigger_free(), which is the matching API to viio_trigger_alloc(),
calls put_device() which decreases the reference count by 1. But the second
reference count acquired in viio_trigger_alloc() is never dropped.

As a result the iio_trigger_release() function is never called and the
memory associated with the trigger is never freed.

Since there is no reason for the trigger to start its lifetime with two
reference counts just remove the extra get_device() in
viio_trigger_alloc().

Fixes: 5f9c035cae ("staging:iio:triggers. Add a reference get to the core for triggers.")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20211024092700.6844-2-lars@metafoo.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-14 10:16:56 +01:00
Pekka Korpinen
e7555f63d6 iio: dac: ad5446: Fix ad5622_write() return value
commit 558df982d4 upstream.

On success i2c_master_send() returns the number of bytes written. The
call from iio_write_channel_info(), however, expects the return value to
be zero on success.

This bug causes incorrect consumption of the sysfs buffer in
iio_write_channel_info(). When writing more than two characters to
out_voltage0_raw, the ad5446 write handler is called multiple times
causing unexpected behavior.

Fixes: 3ec36a2cf0 ("iio:ad5446: Add support for I2C based DACs")
Signed-off-by: Pekka Korpinen <pekka.korpinen@iki.fi>
Link: https://lore.kernel.org/r/20210929185755.2384-1-pekka.korpinen@iki.fi
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-26 11:40:25 +01:00
Dan Carpenter
d3bfe60353 iio: ssp_sensors: fix error code in ssp_print_mcu_debug()
commit 4170d3dd14 upstream.

The ssp_print_mcu_debug() function should return negative error codes on
error.  Returning "length" is meaningless.  This change does not affect
runtime because the callers only care about zero/non-zero.

Reported-by: Jonathan Cameron <jic23@kernel.org>
Fixes: 50dd64d57e ("iio: common: ssp_sensors: Add sensorhub driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20210914105333.GA11657@kili
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-20 10:42:04 +02:00
Dan Carpenter
00b43c9784 iio: ssp_sensors: add more range checking in ssp_parse_dataframe()
commit 8167c9a375 upstream.

The "idx" is validated at the start of the loop but it gets incremented
during the iteration so it needs to be checked again.

Fixes: 50dd64d57e ("iio: common: ssp_sensors: Add sensorhub driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20210909091336.GA26312@kili
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-20 10:42:04 +02:00
Jiri Valek - 2N
8bd6227e76 iio: light: opt3001: Fixed timeout error when 0 lux
commit 26d90b5590 upstream.

Reading from sensor returned timeout error under
zero light conditions.

Signed-off-by: Jiri Valek - 2N <valek@2n.cz>
Fixes: ac663db367 ("iio: light: opt3001: enable operation w/o IRQ")
Link: https://lore.kernel.org/r/20210920125351.6569-1-valek@2n.cz
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-20 10:42:04 +02:00
Christophe JAILLET
42518695ad iio: adc128s052: Fix the error handling path of 'adc128_probe()'
commit bbcf40816b upstream.

A successful 'regulator_enable()' call should be balanced by a
corresponding 'regulator_disable()' call in the error handling path of the
probe, as already done in the remove function.

Update the error handling path accordingly.

Fixes: 913b864686 ("iio: adc: Add TI ADC128S052")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/85189f1cfcf6f5f7b42d8730966f2a074b07b5f5.1629542160.git.christophe.jaillet@wanadoo.fr
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-20 10:42:04 +02:00
Billy Tsai
b867607cf5 iio: adc: aspeed: set driver data when adc probe.
commit eb795cd973 upstream.

Fix the issue when adc remove will get the null driver data.

Fixed: commit 573803234e ("iio: Aspeed ADC")
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Link: https://lore.kernel.org/r/20210831071458.2334-2-billy_tsai@aspeedtech.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-10-20 10:42:04 +02:00
Jonathan Cameron
897f816cf5 iio: dac: ad5624r: Fix incorrect handling of an optional regulator.
[ Upstream commit 97683c851f ]

The naming of the regulator is problematic.  VCC is usually a supply
voltage whereas these devices have a separate VREF pin.

Secondly, the regulator core might have provided a stub regulator if
a real regulator wasn't provided. That would in turn have failed to
provide a voltage when queried. So reality was that there was no way
to use the internal reference.

In order to avoid breaking any dts out in the wild, make sure to fallback
to the original vcc naming if vref is not available.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210627163244.1090296-9-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-09-22 11:45:27 +02:00
Colin Ian King
6b13aec1ff iio: adc: Fix incorrect exit of for-loop
commit 5afc1540f1 upstream.

Currently the for-loop that scans for the optimial adc_period iterates
through all the possible adc_period levels because the exit logic in
the loop is inverted. I believe the comparison should be swapped and
the continue replaced with a break to exit the loop at the correct
point.

Addresses-Coverity: ("Continue has no effect")
Fixes: e08e19c331 ("iio:adc: add iio driver for Palmas (twl6035/7) gpadc")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210730071651.17394-1-colin.king@canonical.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-26 08:37:00 -04:00
Chris Lesiak
4a3f87be66 iio: humidity: hdc100x: Add margin to the conversion time
commit 84edec86f4 upstream.

The datasheets have the following note for the conversion time
specification: "This parameter is specified by design and/or
characterization and it is not tested in production."

Parts have been seen that require more time to do 14-bit conversions for
the relative humidity channel.  The result is ENXIO due to the address
phase of a transfer not getting an ACK.

Delay an additional 1 ms per conversion to allow for additional margin.

Fixes: 4839367d99 ("iio: humidity: add HDC100x support")
Signed-off-by: Chris Lesiak <chris.lesiak@licor.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Link: https://lore.kernel.org/r/20210614141820.2034827-1-chris.lesiak@licor.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-08-26 08:37:00 -04:00
Stephan Gerhold
654d3d1e01 iio: accel: bma180: Fix BMA25x bandwidth register values
commit 8090d67421 upstream

According to the BMA253 datasheet [1] and BMA250 datasheet [2] the
bandwidth value for BMA25x should be set as 01xxx:

  "Settings 00xxx result in a bandwidth of 7.81 Hz; [...]
   It is recommended [...] to use the range from ´01000b´ to ´01111b´
   only in order to be compatible with future products."

However, at the moment the drivers sets bandwidth values from 0 to 6,
which is not recommended and always results into 7.81 Hz bandwidth
according to the datasheet.

Fix this by introducing a bw_offset = 8 = 01000b for BMA25x,
so the additional bit is always set for BMA25x.

[1]: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bma253-ds000.pdf
[2]: https://datasheet.octopart.com/BMA250-Bosch-datasheet-15540103.pdf

Cc: Peter Meerwald <pmeerw@pmeerw.net>
Fixes: 2017cff24c ("iio:bma180: Add BMA250 chip support")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210526094408.34298-2-stephan@gerhold.net
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-28 11:12:20 +02:00
Linus Walleij
5dedf5633e iio: accel: bma180: Use explicit member assignment
commit 9436abc401 upstream

This uses the C99 explicit .member assignment for the
variant data in struct bma180_part_info. This makes it
easier to understand and add new variants.

Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-28 11:12:20 +02:00
Jonathan Cameron
93bafb3094 iio: adc: mxs-lradc: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 6a6be221b8 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Add a comment on why the buffer is the size it is as not immediately
obvious.

Found during an audit of all calls of this function.

Fixes: 6dd112b9f8 ("iio: adc: mxs-lradc: Add support for ADC driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Klinger <ak@it-klinger.de>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210613152301.571002-4-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:40 +02:00
Jonathan Cameron
4ad4a3629d iio: potentiostat: lmp91000: Fix alignment of buffer in iio_push_to_buffers_with_timestamp()
[ Upstream commit 8979b67ec6 ]

Add __aligned(8) to ensure the buffer passed to
iio_push_to_buffers_with_timestamp() is suitable for the naturally
aligned timestamp that will be inserted.

Here structure is not used, because this buffer is also used
elsewhere in the driver.

Fixes: 67e17300dc ("iio: potentiostat: add LMP91000 support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Matt Ranostay <matt.ranostay@konsulko.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Link: https://lore.kernel.org/r/20210501171352.512953-8-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
c443f2240d iio: light: tcs3414: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit ff08fbc22a ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: a244e7b57f ("iio: Add driver for AMS/TAOS tcs3414 digital color sensor")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-19-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
2234430403 iio: light: isl29125: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 3d4725194d ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: 6c25539cbc ("iio: Add Intersil isl29125 digital color light sensor driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-18-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
cb71104169 iio: prox: as3935: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 37eb8d8c64 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: 37b1ba2c68 ("iio: proximity: as3935: fix buffer stack trashing")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Matt Ranostay <matt.ranostay@konsulko.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-15-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
ec27cb64bb iio: prox: pulsed-light: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 679cc377a0 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: cb119d5350 ("iio: proximity: add support for PulsedLight LIDAR")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Matt Ranostay <matt.ranostay@konsulko.com>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-14-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
7514ea6cc0 iio: prox: srf08: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 19f1a254fe ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: 78f839029e ("iio: distance: srf08: add IIO driver for us ranger")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Andreas Klinger <ak@it-klinger.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-13-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
2984d01b35 iio: humidity: am2315: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit f4ca2e2595 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: 0d96d5ead3 ("iio: humidity: Add triggered buffer support for AM2315")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-12-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
262e1581a3 iio: gyro: bmg160: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 06778d881f ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: 13426454b6 ("iio: bmg160: Separate i2c and core driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-11-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
84bec6601c iio: adc: vf610: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 7765dfaa22 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of uses of
iio_push_to_buffers_with_timestamp()

Fixes: 0010d6b444 ("iio: adc: vf610: Add IIO buffer support for Vybrid ADC")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Stefan-Gabriel Mirea <stefan-gabriel.mirea@nxp.com>
Cc: Sanchayan Maity <maitysanchayan@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-10-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:39 +02:00
Jonathan Cameron
ce2f42f6b6 iio: adc: ti-ads1015: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit d85d71dd1a ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: ecc24e72f4 ("iio: adc: Add TI ADS1015 ADC driver support")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Daniel Baluta <daniel.baluta@nxp.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-9-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:38 +02:00
Jonathan Cameron
354558d25a iio: accel: stk8ba50: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 334883894b ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: db6a19b825 ("iio: accel: Add trigger support for STK8BA50")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-8-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:38 +02:00
Jonathan Cameron
800dc3dc35 iio: accel: stk8312: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit f40a71ffec ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: 95c12bba51 ("iio: accel: Add buffer mode for Sensortek STK8312")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-7-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:38 +02:00
Jonathan Cameron
89f252cbe6 iio: accel: kxcjk-1013: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 3ab3aa2e7b ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: 1a4fbf6a92 ("iio: accel: kxcjk1013 3-axis accelerometer driver")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-5-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:38 +02:00
Jonathan Cameron
6a890c76e3 iio: accel: hid: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit c6559bf796 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.
Note this matches what was done in all the other hid sensor drivers.
This one was missed previously due to an extra level of indirection.

Found during an audit of all calls of this function.

Fixes: a96cd0f901 ("iio: accel: hid-sensor-accel-3d: Add timestamp")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-4-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:38 +02:00
Jonathan Cameron
b7a037dca9 iio: accel: bma220: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit 151dbf0078 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: 194dc4c714 ("iio: accel: Add triggered buffer support for BMA220")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-3-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:38 +02:00
Jonathan Cameron
0eaa556d30 iio: accel: bma180: Fix buffer alignment in iio_push_to_buffers_with_timestamp()
[ Upstream commit fc36da3131 ]

To make code more readable, use a structure to express the channel
layout and ensure the timestamp is 8 byte aligned.

Found during an audit of all calls of this function.

Fixes: b9a6a237ff ("iio:bma180: Drop _update_scan_mode()")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210501170121.512209-2-jic23@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:38 +02:00
Nuno Sa
37b8074fdf iio: adis_buffer: do not return ints in irq handlers
[ Upstream commit d877539ad8 ]

On an IRQ handler we should not return normal error codes as 'irqreturn_t'
is expected.

Not necessarily stable material as the old check cannot fail, so it's a bug
we can not hit.

Fixes: ccd2b52f4a ("staging:iio: Add common ADIS library")
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210422101911.135630-2-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-20 16:17:38 +02:00
Oliver Lang
dc5e47b922 iio: ltr501: ltr501_read_ps(): add missing endianness conversion
commit 71b33f6f93 upstream.

The PS ADC Channel data is spread over 2 registers in little-endian
form. This patch adds the missing endianness conversion.

Fixes: 2690be9051 ("iio: Add Lite-On ltr501 ambient light / proximity sensor driver")
Signed-off-by: Oliver Lang <Oliver.Lang@gossenmetrawatt.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Tested-by: Nikita Travkin <nikita@trvn.ru> # ltr559
Link: https://lore.kernel.org/r/20210610134619.2101372-4-mkl@pengutronix.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-20 16:17:30 +02:00
Oliver Lang
51c1ab060f iio: ltr501: ltr559: fix initialization of LTR501_ALS_CONTR
commit 421a26f3d7 upstream.

The ltr559 chip uses only the lowest bit of the ALS_CONTR register to
configure between active and stand-by mode. In the original driver
BIT(1) is used, which does a software reset instead.

This patch fixes the problem by using BIT(0) as als_mode_active for
the ltr559 chip.

Fixes: 8592a7eefa ("iio: ltr501: Add support for ltr559 chip")
Signed-off-by: Oliver Lang <Oliver.Lang@gossenmetrawatt.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Tested-by: Nikita Travkin <nikita@trvn.ru> # ltr559
Link: https://lore.kernel.org/r/20210610134619.2101372-3-mkl@pengutronix.de
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-20 16:17:29 +02:00