Fixes warning found by make W=2:
warning: comparison between signed and unsigned integer expressions
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Changed the processing of IIO_CHAN_INFO_INT_TIME in isl29018_write_raw()
to unlock the mutex and return at the end of the function if invalid
input is passed in. This makes the error handling code consistent with
the processing of IIO_CHAN_INFO_CALIBSCALE and IIO_CHAN_INFO_SCALE
within the same function.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Removes unused variable and associated #defines that was found using
make W=1.
Signed-off-by: Brian Masney <masneyb@onstation.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Fix the following sparse endianness warnings:

drivers/iio/magnetometer/ak8975.c:716:16: warning: cast to restricted __le16
drivers/iio/magnetometer/ak8975.c:837:19: warning: cast to restricted __le16
drivers/iio/magnetometer/ak8975.c:838:19: warning: cast to restricted __le16
drivers/iio/magnetometer/ak8975.c:839:19: warning: cast to restricted __le16
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Add support for the LMP91000 potentiostat which is used for chemical
sensing applications.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Allow IIO_CHAN_INFO_SCALE and IIO_CHAN_INFO_OFFSET attributes for
processing by checking voltage from a regulator.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Allow access to underlying channel IIO_CHAN_INFO_OFFSET from a consumer.
Signed-off-by: Matt Ranostay <matt@ranostay.consulting>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Fixing below warnings:

drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16
drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16
drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16
drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Add support for the AD7766, AD7766-1, AD7766-2, AD7767, AD7767-1, AD7767-2
Analog to Digital converters. It's a family of single channel 24-bit SAR
ADCs. They are all digital interface compatible and the main difference is
the internal decimation rate and analog performance. For communication with
the host processor a SPI interface is used.

In addition the part has a data ready pin that is pulsed for one MCLK cycle
when a conversion has completed and can be used as a IIO trigger.

Datasheets:
	http://www.analog.com/media/en/technical-documentation/data-sheets/AD7766.pdf
	http://www.analog.com/media/en/technical-documentation/data-sheets/AD7767.pdfSigned-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Use the new iio_trigger_validate_own_device() to verify that the trigger
can only be attached to the matching IIO device rather than using a custom
variant.

While the implementation of iio_trigger_validate_own_device() and the
custom variant and are not identical their behaviour is.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Use the new iio_trigger_validate_own_device() to verify that the trigger
can only be attached to the matching IIO device rather than using a custom
variant.

While the implementation of iio_trigger_validate_own_device() and the
custom variant and are not identical their behaviour is.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Some triggers can only be attached to the IIO device that corresponds to
the same physical device. Currently each driver that requires this
implements its own trigger validation function.

Introduce a new helper function called iio_trigger_validate_own_device()
that can be used to do this check. Having a common implementation avoids
code duplication and unnecessary boiler-plate code.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Fixing below warnings:

drivers/iio/dac/ad5592r.c:58:41: warning: incorrect type in argument 2 (different base types)
drivers/iio/dac/ad5592r.c:58:41:    expected unsigned short [usertype] *buf
drivers/iio/dac/ad5592r.c:58:41:    got restricted __be16 *<noident>
drivers/iio/dac/ad5592r.c:62:41: warning: incorrect type in argument 2 (different base types)
drivers/iio/dac/ad5592r.c:62:41:    expected unsigned short [usertype] *buf
drivers/iio/dac/ad5592r.c:62:41:    got restricted __be16 *<noident>
drivers/iio/dac/ad5592r.c:92:41: warning: incorrect type in argument 2 (different base types)
drivers/iio/dac/ad5592r.c:92:41:    expected unsigned short [usertype] *buf
drivers/iio/dac/ad5592r.c:92:41:    got restricted __be16 *<noident>
drivers/iio/dac/ad5592r.c:110:41: warning: incorrect type in argument 2 (different base types)
drivers/iio/dac/ad5592r.c:110:41:    expected unsigned short [usertype] *buf
drivers/iio/dac/ad5592r.c:110:41:    got restricted __be16 *<noident>
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Fixing below warning:
drivers/iio/adc/max1027.c:241:34: warning: dubious: x | !y .
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

Fixes the following sparse warning:

drivers/iio/accel/mma7660.c:42:11: warning:
 symbol 'mma7660_nscale' was not declared. Should it be static?
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

When help ('?') option is passed to the command, the help text
printed but not from '?' switch case of getopt_long() but as a
invalid argument as below. Fix this by adding '?' to opt_String
of getopt_long().

root@am437x-evm:~# ./iio_generic_buffer -?
./iio_generic_buffer: invalid option -- '?'
Usage: generic_buffer [options]...
Capture, convert and output data from IIO device buffer
  -a         Auto-activate all available channels
...
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

The -Wempty-body gcc warning triggers in the newly added zpa2326 driver:

drivers/iio/pressure/zpa2326.c: In function 'zpa2326_dequeue_pressure':
drivers/iio/pressure/zpa2326.c:578:3: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]

The use of an empty statement behind 'if (...)' is harmless here, but
it shows that the dev_dbg() macro is not used correctly: when the "DEBUG"
macro is not set, dev_dbg() already defaults to a no-operation, though
one that lets the compiler know that the arguments are used, and lets
it check the format string.

Fixing this also simplifies the driver.

Fixes: 03b262f2 ("iio:pressure: initial zpa2326 barometer support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

The newly added __sca3000_get_base_freq function handles all valid
modes of the SCA3000_REG_ADDR_MODE register, but gcc notices
that any other value (i.e. 0x00) causes the base_freq variable to
not get initialized:

drivers/staging/iio/accel/sca3000_core.c: In function 'sca3000_write_raw':
drivers/staging/iio/accel/sca3000_core.c:527:23: error: 'base_freq' may be used uninitialized in this function [-Werror=maybe-uninitialized]

This adds explicit error handling for unexpected register values,
to ensure this cannot happen.

Fixes: e0f3fc9b ("iio: accel: sca3000_core: implemented IIO_CHAN_INFO_SAMP_FREQ")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

This issue was found by checkpatch.
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch was found by checkpatch.
Signed-off-by: Sandhya Bankar <bankarsandhya512@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Move the test to check if a variable is NULL, to right after it is being
assigned, rather than some statements later.
Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch removes an unnecessary variable used to store return values
in order to reduce memory usage.
Done using coccinelle:
@@
type T;
constant C;
identifier ret;
@@
- T ret = C;
... when != ret
return
- ret
+ C
;
Signed-off-by: sayli karnik <karniksayli1995@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove 'x=a;' from a consecutive double assignment of the form 'x=a; x=b;'.
Issue detected by the semantic patch found here:
https://github.com/coccinelle/coccinellery/blob/master/write2/write2.cocciSigned-off-by: Rehas Sachdeva <aquannie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch fixes multiple black lines issue found by checkpatch.pl
Signed-off-by: Yannis Damigos <giannis.damigos@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Remove unnecessary parentheses from right side of an assignment. Issue
detected by the following Coccinelle semantic patch:

@r@
identifier x;
expression e1, e2;
@@

- x = (e1 << e2);
+ x = e1 << e2;
Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Replaces left shift operation (1 << d) by BIT(x) macro.
Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Setting the variable 'refresh_rate = 60;' has no use to the rest of the
function. Hence the if statement setting it and the variable itself can be
removed. This was detected using the following Coccinelle semantic patch:

@@
type T;
identifier i;
constant C;
@@
(
extern T i;
|
- T i;
  <+... when != i
- i = C;
  ...+>
)
Signed-off-by: Rehas Sachdeva <aquannie@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Issue found by checkpatch.
Signed-off-by: Katie Dunne <kdunne@mail.ccsf.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add myself as greybus uart and log protocol driver maintainer.
Signed-off-by: David Lin <dtwlin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch.pl warning:
CHECK: Alignment should match open parenthesis
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch.pl warning:
WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Minor error spotted by checkpatch.pl in greybus
code indent should use tabs where possible
Signed-off-by: Richard Groux <rgroux@sauron-mordor.net>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Minor error spotted by checkpatch.pl in greybus
space required before the open brace '{'
Signed-off-by: Richard Groux <rgroux@sauron-mordor.net>
Reviewed-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Modify return statement to use the value being returned directly instead of
assigning it first to 'ret' and returning this variable. Coccinelle semantic
patch used:

@@
expression e;
local idexpression ret;
@@

-ret =
+return
	e;
-return ret;
Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Eliminate unneeded parentheses around the right hand side of an assignment.
Coccinelle semantic patch used:

@@
expression e1, e2;
identifier v;
@@

(
 v = (e1 == e2)
|
 v = (e1 != e2)
|
 v = (e1 <= e2)
|
 v = (e1 >= e2)
|
 v =
- (
	e1
- )
)
Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Replace direct comparisons to NULL i.e. 'x == NULL' with '!x' for consistency.
Coccinelle semantic patch used:

@@
identifier func;
expression x;
statement Z;
@@

x = func(...);

if (
(
+	!
	x
-	== NULL
|
+	!
-	NULL ==
	x
)
   ) Z
Signed-off-by: Eva Rachel Retuya <eraretuya@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch replaces the enum value MOST_CH_ISOC_AVP with the more
appropriate MOST_CH_ISOC.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch adds the strings 'rx', 'tx' and 'isoc' to the list of accepted
identifiers when setting up a channel configuration. To keep consistency it
removes the prefix "dir_" from strings returned by the attributes
set_direction and available_directions and it removes the suffix "_avp"
from the string "isoc_avp" returned by the attributes set_datatype and
available_datatypes.
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch removes trailing zeros from the strings returned by the
attributes available_datatypes and available_directions.
Signed-off-by: Andrey Shvetsov <andrey.shvetsov@k2l.de>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>