The constants MAX_COMPLETIONS and MSG_QUEUE_SIZE control
the number of messages that can be outstanding to each client
before the system as a whole stalls. If the numbers are too
small then unnecessary thread switching will occur while
waiting for a (potentially low priority) client thread to
consume some data; badly written clients can even lead to
deadlock.

For services that carry many short messages, 16 messages can
represent a very small amount of data. Since the resources
are small - 16 bytes for a completion, 4 bytes for a message
pointer - increase the limits so they are unlikely to be hit
except in exceptional circumstances.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

An issue was observed when flushing openmax components
which generate a large number of messages returning
buffers to host.

We occasionally found a duplicate message from 16
messages prior, resulting in a buffer returned twice.

So fix the issue by adding more memory barriers.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Service callbacks are not allowed to return an error. The internal
callback that delivers events and messages to user tasks does not
enqueue them if the service is closing, but this is not an error
and should not be reported as such.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

The dequeue_pending flag wasn't protected by a spinlock in the
service_callback. So fix this to make it safe.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

This reduces the memory dump size to a sufficient value of 16 bytes.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Proper byte order was completely disregarded for multi byte data shared
between AP and module (and APB1). Fix this.
Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Dummy codec register were initially added while populating dummy codec
mixer controls until module topology parser was available. Now, these
dummy registers are nowhere used and thus can be safely removed.

Since ASoC framework requires a valid callback for both read & write
register APIS, currently empty placeholders are kept to avoid panic.

Later, register mapping logic can be defined:
1. Assuming fixed number of maximum modules connected and register bits
corresponds to basic info of each module OR
2. With a logic to dynamically grow register_cache_size based on codec
modules added/removed.
Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Uninitialized variable sig_bits was used while configuring stream params
for codec module. These params are used to configure PCM settings for
APBridgeA.

Usually, this is dependent on codec capability and thus populated via
codec dai_driver definition. In our case, it is fixed to 16 based on the
data format, container supported.
Signed-off-by: Vaibhav Agarwal <vaibhav.agarwal@linaro.org>
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

mixer control->info call back function checks for -ve values to rebase
min and max values. However, le32 variable is used to fetch values from
GB module FW. Thus negative value checking is not required. Fix this!!
Signed-off-by: Vaibhav Agarwal <vaibhav.sr@gmail.com>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

checkpatch.pl warning:
Symbolic permissions are not preferred. Consider using octal permissions.
Signed-off-by: Igor Pylypiv <igor.pylypiv@gmail.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Following error detected by checkpatch.pl:

ERROR: Use 4 digit octal (0777) not decimal permissions
Signed-off-by: Stefano Manni <stefano.manni@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

len was declared unsigned int where we use an int

Fix sparse (-Wtypesign) issues:
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1081:88: warning: incorrect type in argument 3 (different signedness)
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1081:88:    expected int *len
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1081:88:    got unsigned int *<noident>
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1091:86: warning: incorrect type in argument 3 (different signedness)
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1091:86:    expected int *len
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1091:86:    got unsigned int *<noident>
Signed-off-by: Pierre-Yves Kerbrat <pkerbrat@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

wpa_ielen was declared u32 when we actually use an int

Fix sparse (-Wtypesign) issues:
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1008:60: warning: incorrect type in argument 2 (different signedness)
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1008:60:    expected int *wpa_ie_len
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1008:60:    got unsigned int *<noident>
drivers/staging/rtl8188eu/core/rtw_ieee80211.c:1021:69: warning: incorrect type in argument 2 (different signedness)
Signed-off-by: Pierre-Yves Kerbrat <pkerbrat@free.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix the following warnings:
Block comments should align the * on each line
Signed-off-by: Abdul Rauf <abdulraufmujahid@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add support for NI PXI-6220, PXI-6221, PXI-6229, PXI-6250, PXI-6254,
PXI-6259, PXIe-6259, PXI-6280, PXI-6284, and PXI-6289 boards, treating
them the same as the correspondingly numbered PCI and PCIe boards (apart
from having different Comedi board name strings).  The same has
previously been done for other PXI boards supported by the driver.

The PCI device IDs for the newly supported boards come from the
"nixswv.inf" file in National Instrument's Windows drivers.

Also, sort `ni_pcimio_pci_table[]` by PCI device ID.  It is mostly
sorted already, so only the entries for PXI-6251 and PXIe-6251 need
moving.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Add support for the NI PCI-6224 board, assuming it behaves like the NI
PXI-6224 board at the register level.

The PCI device ID comes from the "nitiowv.inf" file in National
Instrument's Windows drivers.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'iio-for-4.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

Jonathan writes:

First round of new device support, features and cleanups for IIO in the 4.11 cycle.

It's shaping to be another fairly busy cycle. Lots more on the way!

New device support
* ads7950
  - new driver supporting ads7950, ads7951, ads7952, ads7953, ads7954,
  ads7955, ads7956, ads7957, ads7958, ads7959, ads7960, and ads7961 ADCs.
* cm3605
  - New driver for this light sensor and proximity sensor  which is an
  analog part with some additional digital controls.
* hx711
  - New driver.

Core new stuff
* Gravity sensor type.  This is a processed datastream in which the device
will try to work out which way is down.
* Split the buffer.h file into two parts. One provides the interface to 'use'
a buffer, the second provides the internals of the buffer functionality as
needed by implementations of buffers.
  - Move documentation inline so as to allow use of private: tag when
  generating documentation.
  - Add some utility functions for the few things that are directly done
  with the buffers.
  - Stop exporting functions that no-one uses outside of the core code.
  - Push docs down by the code in the c file where they should have always
  been.
  - Fix typo in kernel-doc for buffer.
  - push down some includes that were previously happening implicitly.
  - stop enabling the timestamp of the dummy device.

Features and cleanups
* ad5592r
  - ACPI support
* ad5593r
  -ACPI support.
* ad5933
  - Fix a false comment about size of a particular register.
* ad7150
  - replace S_IRUGO | S_IWUSR with 0644.  I'm not that keen on these patches
  in general, but as it was nicely presented I took this one anyway. As a
  general rule will only take these as part of a larger driver cleanup.
  - don't eat an error but rather reutnr it in the write_event_config callback.
* ad7606
  - replace non standard range attibute with _scale
* ade7753
  - use usleep_range for short sleeps
* ade7754
  - use usleep_range for short sleeps
* ade7758
  - use usleep_range for short sleeps
* ade7759
  - use usleep_range for short sleeps
* ade7854
  - use usleep_range for short sleeps
* adis16201
  - fix description
* adis16203
  - fix description
  - fix copyright year
* adis16209
  - fix description
* adt7316
  - Add braces to arms of if else statement (for consistency)
  - Alignment fixes.
* axp288
  - Fix up an issue with accidental overwrites of data.
* bmi160
  - add deivce tables for i2c and spi to support correctly identifying the
  full dt name (including manufacturer).
  - device tree binding.
* bmp280
  - use usleep_range for short sleeps.
* cm3232
  - return error from cm3232_reg_init rather than eating it if the last write
  fails.
* dummy driver
  - remove a semicolor found at end of a function defintition.
* exynos-adc
  - use usleep_range for short sleeps.
* hid-sensor (accel)
  - Add timestamp support.  The hardware can provide timestamps so lets support
  them. If not fall back to timestamps estimated in kernel.
* hid-sensor (light)
  - Add a duplicate ID for the light channels so as to keep existing interface
  whilst also using the more standard IIO interface.
* hts221
  - acpi probing
* imx25-gcq
  - Add a macro call to allow this driver to be automatically loaded.
* isl29028
  - reorganise code to avoid deep nesting of if statements.
  - move chip test and default regs into a function suitable or sharing with
  power management code.
  - tidy up some code alignment.
* lidar-lite-v3
  - introduce compatible strings that make it clear Garmin have consideral
  friends.
* mma8452
  - avoid returning signed value when unsigned is appropriate
* spmi-vadc
  - Update function for generic voltage conversion to take into account that
  different channels on this device should be handled differently.
  - Rework code to allow per channel voltage scaling and support the standard
  options for this hardware.
  - Fixup three minor issues with the above patches for this part. These all
  effect test builds rather than the native builds for the part, but good to
  clean them up anyway.
* st_sensors
  - support device matching from the ACPI DST tables.
  - acpi based probing for accelerometers
  - acpi based probing for pressure sensors
  - Allow pressure sensors to read negative values.
  - Export sampling frequency for lps25h and lps331ap.
  - Add support for the old DT bindings from the period when these deivces
  were often supported through windows.

Docs fixup:
* typo in sysfs-bus-iio

Value of rx_head member of struct recv_frame does not used. Remove it.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Trace output for each received packet in rtw_recv_indicatepkt() is redudant.
Remove it.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

wifidirect_info structure is unused.
Big amount of another definitions used only for wifidirect_info definition.
Remove all.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

get_rxmem() is not unused, remove it.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

EOR macro is not unused, remove it.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

WPA_(GET|PUT)_(BE|LE)_xx macros are unused, remove it.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

(GET|PUT)U32 macros are unused, remove it.
Signed-off-by: Ivan Safonov <insafonov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Populate header function signatures with variable names as well, not
just variable types.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix missing space right before multiple line comment closing.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Return statements are superfluous in void functions, and checkpatch
complains about them too.

Remove offending return.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix checkpatch error of line exceeding 80 characters.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch CHECK:
Blank lines aren't necessary before a close brace '}'
Please don't use multiple blank lines
Signed-off-by: Scott Matheina <scott@matheina.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch CHECK: Alignment should match open parenthesis
Signed-off-by: Scott Matheina <scott@matheina.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch CHECK: Please don't use multiple blank lines
Signed-off-by: Scott Matheina <scott@matheina.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch CHECK: Alignment should match open parenthesis
Signed-off-by: Scott Matheina <scott@matheina.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch CHECK: Alignment should match open parenthesis
Signed-off-by: Scott Matheina <scott@matheina.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch warning: braces {} should be used on all arms of
this statement
Signed-off-by: Scott Matheina <scott@matheina.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed Alignment should match open parenthesis checkpatch CHECK.
Signed-off-by: Scott Matheina <scott@matheina.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

vfree frees the virtually continuous block of memory beginning at addr.
If addr is NULL, no operation is performed. So, NULL test is not needed
before vfree.
Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Removed macros not in use.
Signed-off-by: Kartikey Singh <dr.kartikeynrc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Changed file permissions to octal.
Found with checkpatch.
Signed-off-by: Derek Robson <robsonde@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixes checkpatch warning: Alignment should match open parenthesis
Signed-off-by: Scott Matheina <scott@matheina.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Fixed sparse warnings about endianness. E.g.:

warning: cast to restricted __le16
Signed-off-by: Eric Salem <ericsalem@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>