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2015-12-22iio: light: us5182d: Fix enable status inconcistencyAdriana Reus1-4/+12
When setting als only or proximity only modes make sure that we mark the other component as disabled. This fix is in preparation of adding event support because that will make it possible to switch between one-shot and continuous modes and not tracking these correctly may cause faulty behaviour (e.g wrongfully considering px enabled and not setting an appropriate mode in the chip). Signed-off-by: Adriana Reus <adriana.reus@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-22iio: Make IIO value formating function globally available.Andrew F. Davis2-0/+3
Make IIO value formating function globally available to allow IIO drivers to output values as the core does. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-19iio: mma8452: use enum for channel indexMartin Kepplinger1-16/+23
This gets rid of some magic numbers by adding an enum. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-19iio: mma8452: remove unused register descriptionMartin Kepplinger1-1/+0
Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-19Staging: iio: accel: sca3000: Fixed NULL comparison styleBhaktipriya Shridhar1-1/+1
The variable u8 **rx_p, is a pointer-to-pointer and hence the check should be "if (!*rx_p)" and not "if (!rx_p)". In the earlier version, checkpatch.pl gave the following check, which was incorrect: CHECK: Comparison to NULL could be written "!rx_p" + if (*rx_p == NULL) { Signed-off-by: Bhaktipriya Shridhar <bhaktipriya96@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-19iio: ina2xx: add ABI documentation entry sysfs-bus-iio-ina2xx-adcMarc Titinger1-0/+24
Documentation for attributes: * in_allow_async_readout * in_shunt_resistor Signed-off-by: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-19iio: ina2xx: fix channel order in software bufferMarc Titinger1-2/+2
POWER and CURRENT were swapped out in the buffer: was current2 and power3, correct order is power2 and current3. Signed-off-by: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio/inkern.c Use list_for_each_entry_safeAnshul Garg1-4/+2
Use list_for_each_entry_safe instead of list_for_each_safe and list_entry call. Signed-off-by: Anshul Garg <aksgarg1989@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12Documentation: add the binding file for Freescale imx7d ADC driverHaibo Chen1-0/+22
The patch adds the binding file for Freescale imx7d ADC driver. Signed-off-by: Haibo Chen <haibo.chen@freescale.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio: adc: add IMX7D ADC driver supportHaibo Chen3-0/+619
Freescale i.MX7D soc contains a new ADC IP. This patch add this ADC driver support, and the driver only support ADC software trigger. Signed-off-by: Haibo Chen <haibo.chen@freescale.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio: ina2xx: give the capture kthread a more useful name string.Marc Titinger1-1/+2
PID PPID USER STAT VSZ %VSZ %CPU COMMAND 144 2 root DW 0 0% 33% [ina226:1-8800us] 141 2 root DW 0 0% 25% [ina226:0-8800us] 40 2 root SW 0 0% 15% [irq/156-4802a00] 147 2 root DW 0 0% 7% [ina226:2-8800us] 145 1 root S 1236 0% 6% dd if /dev/iio:device1 of /dev/null 148 1 root S 1236 0% 4% dd if /dev/iio:device2 of /dev/null 149 137 root R 1244 0% 3% top -d 1 142 1 root S 1236 0% 2% dd if /dev/iio:device0 of /dev/null Signed-off-by: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio: ina2xx: re-instate a sysfs show/store for the shunt resistor valueMarc Titinger1-6/+46
Different probe modules use different resistor values. The front-end application may read a probe ID (from eeprom) and set the shunt value accordingly. Signed-off-by: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio: ina2xx: provide a sysfs parameter to allow async readout of the ADCsMarc Titinger1-9/+45
This can lead to repeated or skipped samples depending on the clock beat between the capture thread and the chip sampling clock, but will also spare reading/waiting for the Capture Ready Flag and improve the available i2c bandwidth for reading measurements. Output of iio_info: ...snip... 4 device-specific attributes found: attr 0: in_oversampling_ratio value: 4 attr 1: in_allow_async_readout value: 0 attr 2: integration_time_available value: 140 204 332 588 1100 2116... attr 3: in_sampling_frequency value: 114 Signed-off-by: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio: ina2xx: add support for TI INA2xx Power MonitorsMarc Titinger3-0/+679
in SOFTWARE buffer mode, a kthread will capture the active scan_elements into a kfifo, then compute the remaining time until the next capture tick and do an active wait (udelay). This will produce a stream of up to fours channels plus a 64bits timestamps (ns). Tested with ina226, on BeagleBoneBlack. Datasheet: http://www.ti.com/lit/gpn/ina226 Signed-off-by: Marc Titinger <mtitinger@baylibre.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio: chemical: add AMS iAQ-core supportMatt Ranostay4-0/+210
Add support for AMS iAQ-core continuous and pulsed VOC sensors. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio: light: add MAX30100 oximeter driver supportMatt Ranostay6-0/+504
MAX30100 is an heart rate and pulse oximeter sensor that works using two LEDS of different wavelengths, and detecting the light reflected back. This patchset adds support for both IR and RED LED channels which can be processed in userspace to determine heart rate and blood oxygen levels. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-12iio:adc128s052: add support for adc124s021Oliver Stäbler3-6/+17
Signed-off-by: Oliver Stäbler <oliver.staebler@bytesatwork.ch> Reviewed-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-05staging: iio: select IRQ_WORK for IIO_DUMMY_EVGENArnd Bergmann1-1/+2
The iio dummy code was recently changed to use irq_work_queue, but that code is compiled into the kernel only if IRQ_WORK is set, so we can get a link error here: drivers/built-in.o: In function `iio_evgen_poke': (.text+0x208a04): undefined reference to `irq_work_queue' This changes the Kconfig file to match what other drivers do. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: fd2bb310ca3d ("Staging: iio: Move evgen interrupt generation to irq_work") Acked-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-05iio: st_accel_core: Remove unneeded defineRobert Kmiec1-3/+0
Definition of ST_SENSORS_WAI_ADDRESS was introduced within a very first commit of this driver, but it was never used. This address is already defined as ST_SENSORS_DEFAULT_WAI_ADDRESS in include/linux/iio/common/st_sensors.h To avoid duplication of the same constant in two different places called almost exactly the same, the one which was never used should be removed. Signed-off-by: Robert Kmiec <robert.r.kmiec@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-05iio: proximity: lidar: optimize i2c transactionsMatt Ranostay1-25/+70
Optimize device tranactions using i2c transfers versus multiple possibly racey i2c_smbus_* function calls, and only one transaction for distance measurement. Falls back to smbus method if i2c functionality isn't available. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-05iio:configfs: Introduce iio/configfs.h to provide a location for the ↵Jonathan Cameron4-1/+17
configfs_subsystem This exported element needs to be accesible to all drivers using configfs within IIO. Previously it was in the sw_trig.h file which only convered one such usecase. This also fixes a sparse warning as it is now in a header that makes sense to include from industrialio-configfs.c Signed-off-by: Jonathan Cameron < jic23@kernel.org>
2015-12-03iio: chemical: vz89x: rework i2c transfer readingMatt Ranostay1-14/+52
Add an optimized i2c transfer reading function, and fallback to racey smbus transfers if client->adapter doesn't support this. Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-03iio: Documentation: Add IIO configfs documentationDaniel Baluta2-0/+114
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Acked-by: Crt Mori <cmo@melexis.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-03iio: trigger: Introduce IIO hrtimer based triggerDaniel Baluta3-0/+205
This patch registers a new IIO software trigger interrupt source based on high resolution timers. Notice that if configfs is enabled we create sampling_frequency attribute allowing users to change hrtimer period (1/sampling_frequency). The IIO hrtimer trigger has a long history, this patch is based on an older version from Marten and Lars-Peter. Signed-off-by: Marten Svanfeldt <marten@intuitiveaerial.com> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-03iio: core: Introduce IIO software triggersDaniel Baluta4-0/+263
A software trigger associates an IIO device trigger with a software interrupt source (e.g: timer, sysfs). This patch adds the generic infrastructure for handling software triggers. Software interrupts sources are kept in a iio_trigger_types_list and registered separately when the associated kernel module is loaded. Software triggers can be created directly from drivers or from user space via configfs interface. To sum up, this dynamically creates "triggers" group to be found under /config/iio/triggers and offers the possibility of dynamically creating trigger types groups. The first supported trigger type is "hrtimer" found under /config/iio/triggers/hrtimer. Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-03iio: core: Introduce IIO configfs supportDaniel Baluta3-0/+59
This patch creates the IIO configfs root group. The group will appear under <mount-point>/iio/, usually /config/iio. We introduce configfs support in IIO in order to be able to easily create IIO objects from userspace. The first supported IIO objects are triggers introduced with next patches. Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Tested-by: Matt Ranostay <matt.ranostay@intel> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02Staging: iio: frequency: use dev_get_platdata()Nizam Haider2-2/+2
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Nizam Haider <nijamh@cdac.in> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02Staging: iio: light: tsl2x7x_core: use dev_get_platdata()Nizam Haider1-1/+1
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Nizam Haider <nijamh@cdac.in> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02Staging: iio: adc: use dev_get_platdata()Nizam Haider3-3/+3
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Nizam Haider <nijamh@cdac.in> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02iio: light: us8152d: Add power management supportAdriana Reus1-7/+88
Add power management for sleep as well as runtime pm. Signed-off-by: Adriana Reus <adriana.reus@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02iio: light: us5182d: Add functions for selectively enabling als and proximityAdriana Reus1-4/+62
Keep track of the als and px enabled/disabled status in order to enable them selectively. Signed-off-by: Adriana Reus <adriana.reus@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02Documentation: devicetree: Add property for controlling power saving mode ↵Adriana Reus1-0/+11
for the us5182 als sensor Add a property to allow changing the default power-saving mode. By default, at read raw the chip will activate and provide one measurent, then it will shut itself down. However, the chip can also work in "continuous" mode which may be more reliable but is also more power consuming. Signed-off-by: Adriana Reus <adriana.reus@intel.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02iio: light: us5182d: Add property for choosing default power modeAdriana Reus1-12/+78
This chip supports two power modes. 1. "one-shot" mode - the chip activates and executes one complete conversion loop and then shuts itself down. This is the default mode chosen for raw reads. 2. "continuous" mode - the chip takes continuous measurements. Continuous mode is more expensive power-wise but may be more reliable. Add a property so that if preferred, the default power mode for raw reads can be set to continuous. Separate one-shot enabling in a separate function that will be used depending on the chosen power mode. Also create a function for powering the chip on and off. Signed-off-by: Adriana Reus <adriana.reus@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02dt-bindings: iio: adc: Update mcp342x binding for the mcp3421Sascha Hauer1-1/+2
The mcp3421 is the single channel variant of the mcp342x family and can be supported by the mcp342x driver. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Cc: devicetree@vger.kernel.org Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-02iio: adc: mcp3422: Add mcp3421 supportSascha Hauer1-0/+9
The mcp3421 is the single channel variant of the mcp342x family. Support is straight forward, only the channels array has to be added for this chip. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-12-01Merge tag 'iio-for-4.5a' of ↵Greg Kroah-Hartman64-238/+3625
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: First set of new device support, features and cleanups for IIO in the 4.5 cycle Usual mixed bag, but the big item perhaps in this series is the DMA buffer support added by Lars-Peter Clausen. It's been in the works for a long time and it will be interesting to see what hardware support shows up now that this is available. New core features + associate cleanup. * Add generic DMA buffer infrastructure * Add a DMAengine framework based buffer Also associated minor changes. - Set the device buffer watermark based on the minimum watermark for all attached buffers rather than just the 'primary' one. - iio_buffer_init - only set the watermark default if one hasn't already been provided. This allows simple support for devices with a fixed watermark. - read only attribute for watermark on fixed watermark devices. - add explicit buffer enable/disable callbacks to allow the buffer to do more than trivial actions when it is being turned on and off. * IIO_VAL_INT support in write_raw_get_fmt function. New device support * Freescale MMA7455/7456L accelerometers * Memsic MXC6255XC accelerometer * ST lis2dh12 accelerometer * TI ADS8688 ADC * TI Palamas (twl6035/7) gpadc New driver features * mma8452 - support either of the available interrupt pins to cope with the case where board layout has lead to a particular one being connected. Staging graduation * Dummy driver - this driver acts as both an example and a test device for those with out hardware to develop userspace code against. Cleanups and minor bits and bobs. * treewide - Sort out the ordering of iio_device_register/unregister vs runtime pm function calls so that it's all nice and consistent and not race prone. - Check sscanf return values. None of the cases will actually happen as the strings are supplied internally, but best to be consistent on this. * ad7780 - switch over to the gpio descriptor interface and remove the now unused platform data which gets rid of a header entirely. * ad7793 - drop a pointless else statement. * at91_adc - Swap kmalloc_array in for a kmalloc doing the same job. * dummy - get rid of some commented out lines that snuck in during the move of the driver. * lm3533-als - Print an error message on provision of an invalid resistance. * mcp320x - Add compatible strings with vendor prefix and deprecate those with no vendor prefix. * mxs-lradc - Use BIT macro in various places rather than shifted ones. * pa12203001 - Power off the chip if the registration fails. * pulsedlight-lidar-lite - add runtime PM support. * xilinx XADC - constify an iio_buffer_setup_ops structure.
2015-11-25staging: unisys: better config switch commentsBenjamin Romer2-2/+12
We should provide more information in the Kconfig help for visorbus and visorinput. Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-25staging: unisys: visornic: Removed the blank lineAnjali Menon1-1/+0
Removed the blank line before the close brace to remove the check detected by the checkpatch.pl CHECK: Blank lines aren't necessary before a close brace '}' Signed-off-by: Anjali Menon <cse.anjalimenon@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-25Staging: lustre: obd_cksum.h: Remove unused cksum_types_supported_serverShraddha Barke1-23/+0
cksum_types_supported_server is defined in header file but not used anywhere. Hence remove it. Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com> Acked-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-24drivers: staging: vme: Deleted casting to (void *)Egor Uleyskiy1-3/+3
Signed-off-by: Egor Uleyskiy <egor.ulieiskii@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-24drivers: staging: vme: Fixed checking NULL and 0 code styleEgor Uleyskiy3-8/+8
Signed-off-by: Egor Uleyskiy <egor.ulieiskii@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-24drivers: staging: vme: Deleted extra brackingEgor Uleyskiy2-3/+3
* Deleted extra bracking of VME_* constants * Deleted extra bracking of address operator Signed-off-by: Egor Uleyskiy <egor.ulieiskii@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-24drivers: staging: vme: Fixed the using of sizeofEgor Uleyskiy2-6/+6
Constructions that looks like card = kzalloc(sizeof(struct pio2_card), GFP_KERNEL); are changed to card = kzalloc(sizeof(*card), GFP_KERNEL); Signed-off-by: Egor Uleyskiy <egor.ulieiskii@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-24drivers: staging: vme: Deleted extra empty linesEgor Uleyskiy2-4/+0
Signed-off-by: Egor Uleyskiy <egor.ulieiskii@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-24drivers: staging: vme: Fixed indentionEgor Uleyskiy3-21/+21
Signed-off-by: Egor Uleyskiy <egor.ulieiskii@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-23Merge 4.4-rc2 into staging-nextGreg Kroah-Hartman334-5497/+4149
We want those fixes in here to resolve merge issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-11-22Linux 4.4-rc2v4.4-rc2Linus Torvalds1-1/+1
2015-11-22Merge branch 'akpm' (patches from Andrew)Linus Torvalds6-76/+182
Merge slub bulk allocator updates from Andrew Morton: "This missed the merge window because I was waiting for some repairs to come in. Nothing actually uses the bulk allocator yet and the changes to other code paths are pretty small. And the net guys are waiting for this so they can start merging the client code" More comments from Jesper Dangaard Brouer: "The kmem_cache_alloc_bulk() call, in mm/slub.c, were included in previous kernel. The present version contains a bug. Vladimir Davydov noticed it contained a bug, when kernel is compiled with CONFIG_MEMCG_KMEM (see commit 03ec0ed57ffc: "slub: fix kmem cgroup bug in kmem_cache_alloc_bulk"). Plus the mem cgroup counterpart in kmem_cache_free_bulk() were missing (see commit 033745189b1b "slub: add missing kmem cgroup support to kmem_cache_free_bulk"). I don't consider the fix stable-material because there are no in-tree users of the API. But with known bugs (for memcg) I cannot start using the API in the net-tree" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: slab/slub: adjust kmem_cache_alloc_bulk API slub: add missing kmem cgroup support to kmem_cache_free_bulk slub: fix kmem cgroup bug in kmem_cache_alloc_bulk slub: optimize bulk slowpath free by detached freelist slub: support for bulk free with SLUB freelists
2015-11-22Merge tag 'tty-4.4-rc2' of ↵Linus Torvalds11-13/+15
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial fixes from Greg KH: "Here are a few small tty/serial driver fixes for 4.4-rc2 that resolve some reported problems. All have been in linux-next, full details are in the shortlog below" * tag 'tty-4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: serial: export fsl8250_handle_irq serial: 8250_mid: Add missing dependency tty: audit: Fix audit source serial: etraxfs-uart: Fix crash serial: fsl_lpuart: Fix earlycon support bcm63xx_uart: Use the device name when registering an interrupt tty: Fix direct use of tty buffer work tty: Fix tty_send_xchar() lock order inversion
2015-11-22Merge tag 'staging-4.4-rc2' of ↵Linus Torvalds8-64/+115
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging/IIO fixes from Greg KH: "Here are some staging and iio driver fixes for 4.4-rc2. All of these are in response to issues that have been reported and have been in linux-next for a while" * tag 'staging-4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: Revert "Staging: wilc1000: coreconfigurator: Drop unneeded wrapper functions" iio: adc: xilinx: Fix VREFN scale iio: si7020: Swap data byte order iio: adc: vf610_adc: Fix division by zero error iio:ad7793: Fix ad7785 product ID iio: ad5064: Fix ad5629/ad5669 shift iio:ad5064: Make sure ad5064_i2c_write() returns 0 on success iio: lpc32xx_adc: fix warnings caused by enabling unprepared clock staging: iio: select IRQ_WORK for IIO_DUMMY_EVGEN vf610_adc: Fix internal temperature calculation
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