| Commit message (Collapse) | Author | Age |
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Pull devicetree updates from Rob Herring:
- Import of latest upstream device tree compiler (dtc)
- New function of_get_child_by_name
- Support for #size-cells of 0 and #addr-cells of >2
- Couple of DT binding documentation updates
Fix up trivial conflicts due to of_get_child_by_name() having been added
next to the new of_get_next_available_child().
* tag 'dt-for-3.7' of git://sources.calxeda.com/kernel/linux:
MAINTAINERS: add scripts/dtc under Devicetree maintainers
dtc: import latest upstream dtc
dt: Document general interrupt controller bindings
dt/s3c64xx/spi: Use of_get_child_by_name to get a named child
dt: introduce of_get_child_by_name to get child node by name
of: i2c: add support for wakeup-source property
of/address: Handle #address-cells > 2 specially
DT: export of_irq_to_resource_table()
devicetree: serial: Add documentation for imx serial
devicetree: pwm: mxs-pwm.txt: Fix reg field annotation
of: Allow busses with #size-cells=0
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As follow-up to "dt: introduce of_get_child_by_name to get child node by
name." patch, This patch removes some of the code duplication in the
driver by replacing it with of_get_child_by_name instead.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@st.com>
Signed-off-by: Rob Herring <rob.herring@calxeda.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc
Pull spi updates from Mark Brown:
"No framework work here, only a bunch of driver updates of varying
sizes:
- Factoring out of the core hardware support from the MXS MMC driver
by Marek Vasut to allow the hardware to also be used for SPI.
- Lots of error handling cleanups from Guenter Roeck
- Removal of the existing Tegra driver which is quite comprehensively
broken as detailed in the changelog for the removal.
- DT suppport for the PL022 and GPIO drivers.
- pinctrl support for OMAP and PL022."
Pulling from Mark Brown as Grant Likely is still busy moving.
* tag 'spi-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc: (53 commits)
spi: remove completely broken Tegra driver
spi/imx: set the inactive state of the clock according to the clock polarity
spi/pl022: get/put resources on suspend/resume
spi/pl022: use more managed resources
spi/pl022: Devicetree support w/o platform data
spi/s3c64xx: Don't free controller_data on non-dt platforms
spi: omap2-mcspi: add pinctrl support
spi/pl022: adopt pinctrl support
spi: omap2-mcspi: Cleanup the omap2_mcspi_txrx_dma function
spi/gpio: Fix stub for spi_gpio_probe_dt()
spi/mxs: Make the SPI block clock speed configurable via DT
spi: spi-sh-hspi: drop frees of devm_ alloc'd data
spi/pl022: Fix chipselects pointer computation
spi: spi-tle62x0: Use module_spi_driver macro
mxs/spi: Rework the mxs_ssp_timeout to be more readable
mxs/spi: Decrement the DMA/PIO border
mxs/spi: Increment the transfer length only if transfer succeeded
mxs/spi: Fix issues when doing long continuous transfer
spi: spi-gpio: Add DT bindings
spi: spi-gpio: store chipselect information in private structure
...
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Linux 3.6-rc6
Conflicts:
drivers/spi/spi-omap2-mcspi.c
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When s3c64xx-spi is instantiated from device tree an instance of
struct s3c64xx_spi_csinfo is dynamically allocated in the driver.
For non-dt platform it is passed from board code through
spi_register_board_info(). On error path in s3c64xx_spi_setup()
function there is an attempt to free this data struct
s3c64xx_spi_csinfo object as it would have been allocated in the
driver for both, dt and non-dt based platforms. This leads to
following bug when gpio request fails:
spi spi1.0: Failed to get /CS gpio [21]: -16
kernel BUG at mm/slub.c:3478!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 0 Not tainted (3.6.0-rc5-00092-g9b0b493-dirty #6111)
PC is at kfree+0x148/0x158
LR is at s3c64xx_spi_setup+0xac/0x290
pc : [<c00a513c>] lr : [<c0227014>] psr: 40000013
sp : ee043e10 ip : c032883c fp : c0481f7c
r10: ee0abd80 r9 : 00000063 r8 : 00000000
r7 : ee129e78 r6 : ee104a00 r5 : fffffff0 r4 : c047bc64
r3 : 40000400 r2 : c047bc64 r1 : c04def60 r0 : 0004047b
Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: 10c5387d Table: 4000404a DAC: 00000015
Process swapper/0 (pid: 1, stack limit = 0xee0422f0)
Stack: (0xee043e10 to 0xee044000)
...
[<c00a513c>] (kfree+0x148/0x158) from [<c0227014>] (s3c64xx_spi_setup+0xac/0x290)
[<c0227014>] (s3c64xx_spi_setup+0xac/0x290) from [<c02251a4>] (spi_setup+0x34/0x4c)
[<c02251a4>] (spi_setup+0x34/0x4c) from [<c02258d0>] (spi_add_device+0x98/0x128)
[<c02258d0>] (spi_add_device+0x98/0x128) from [<c02259d4>] (spi_new_device+0x74/0xa8)
[<c02259d4>] (spi_new_device+0x74/0xa8) from [<c0225a2c>] (spi_match_master_to_boardinfo+0x24/0x44)
[<c0225a2c>] (spi_match_master_to_boardinfo+0x24/0x44) from [<c0225b40>] (spi_register_master+0xf4/0x2a8)
[<c0225b40>] (spi_register_master+0xf4/0x2a8) from [<c043fe0c>] (s3c64xx_spi_probe+0x34c/0x42c)
[<c043fe0c>] (s3c64xx_spi_probe+0x34c/0x42c) from [<c01fc198>] (platform_drv_probe+0x18/0x1c)
There should be no attempt to kfree controller_data when it was
externally provided through the board code. Fix this by freeing
controller_data only when dev->of_node is not null.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Suspend and resume functions call spi_master_get() without matching
spi_master_put(). The extra references are unnecessary and cause subsequent
module unload attempts to fail. Drop the calls.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.
This moves such data out of the samsung include directories
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: "Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Bryan Wu <bryan.wu@canonical.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Chris Ball <cjb@laptop.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Sangbeom Kim <sbkim73@samsung.com>
Cc: Liam Girdwood <lrg@ti.com>
Cc: linux-samsung-soc@vger.kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc
Pull spi fixes from Mark Brown:
"Grant is still away so another pull request with some fairly minor
fixes, the most notable of which are several fixes for some common
error patterns with the reference counting spi_master_get/put do."
* tag 'spi-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc:
spi/coldfire-qspi: Drop extra calls to spi_master_get in suspend/resume functions
spi: spi-coldfire-qspi: Drop extra spi_master_put in device remove function
spi/pl022: fix spi-pl022 pm enable at probe
spi/bcm63xx: Ensure that memory is freed only after it is no longer used
spi: omap2-mcspi: Fix the error handling in probe
spi/s3c64xx: Add missing static storage class specifiers
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Silences the following sparse warnings:
drivers/spi/spi-s3c64xx.c:1482:32: warning:
symbol 's3c2443_spi_port_config' was not declared. Should it be static?
drivers/spi/spi-s3c64xx.c:1489:32: warning:
symbol 's3c6410_spi_port_config' was not declared. Should it be static?
drivers/spi/spi-s3c64xx.c:1495:32: warning:
symbol 's5p64x0_spi_port_config' was not declared. Should it be static?
drivers/spi/spi-s3c64xx.c:1501:32: warning:
symbol 's5pc100_spi_port_config' was not declared. Should it be static?
drivers/spi/spi-s3c64xx.c:1508:32: warning:
symbol 's5pv210_spi_port_config' was not declared. Should it be static?
drivers/spi/spi-s3c64xx.c:1515:32: warning:
symbol 'exynos4_spi_port_config' was not declared. Should it be static?
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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When a device tree definition os an s3c64xx SPI master is missing
a "controller-data" subnode, the newly added s3c64xx_get_slave_ctrldata
function might use uninitialized memory in place of that node,
which was correctly reported by gcc.
Without this patch, building s3c6400_defconfig results in:
drivers/spi/spi-s3c64xx.c: In function 's3c64xx_get_slave_ctrldata.isra.25':
drivers/spi/spi-s3c64xx.c:841:5: warning: 'data_np' may be used uninitialized in this function [-Wuninitialized]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Jaswinder Singh <jaswinder.singh@linaro.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
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They have very few users and they're both just doing a single register
write so the advantage of having the macro is a bit limited. An inline
function might make sense but it's as easy to just do the writes directly.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Saves some error handling and a small amount of code.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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No call was being made by the GPIO driver to put the GPIO into output
mode meaning that the calls to gpio_set_value() which were being done
were not valid. A similar issue appears to exist with the DT GPIO
requests but as they appear to be being used for pinmux it's less clear
to me that we want to configure them.
Without this fix Cragganmore systems can't talk to their SPI devices.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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When gpio_request() fails the driver logged the failure but while it'd
try to print an error code in the non-DT case it didn't pass the error
code in so garbage would be logged and in the DT case the error wasn't
logged.
Further, in the non-DT case the error code was then overwritten with -EBUSY
depriving the caller of information and breaking automatic probe deferral
pushing back from the GPIO level. Also reformat the non-DT log message
so it's not word wrapped and we can grep for it.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Add support for device based discovery.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Jaswinder Singh <jaswinder.singh@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The set_level callback in the controller data, which is used to configure
the slave select line, cannot be supported when migrating the driver to
device tree based discovery. Since all the platforms currently use gpio
as the slave select line, this callback can be removed from the
controller data and replaced with call to gpio_set_value in the driver.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Jaswinder Singh <jaswinder.singh@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The platform data pointer that is passed to the spi gpio setup functions
is not used. Hence, this parameter is removed from all the spi gpio setup
functions.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Jaswinder Singh <jaswinder.singh@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Platform data is used to specify controller hardware specific information
such as the tx/rx fifo level mask and bit offset of rx fifo level. Such
information is not suitable to be supplied from device tree. Instead,
it can be moved into the driver data and removed from platform data.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Jaswinder Singh <jaswinder.singh@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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The macro S3C64XX_SPI_ST_TRLCNTZ is not used and hence it is removed.
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Jaswinder Singh <jaswinder.singh@linaro.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Config operation is separated from request operation in
DMA common operation. Because spi driver can change the
DMA config for every transfer. So this patch is using the
separated DMA config operation.
Signed-off-by: Boojin Kim <boojin.kim@samsung.com>
Signed-off-by: Kyoungil Kim <ki0351.kim@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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Commit 054ebc (spi: Compatibility with direction which is used in samsung
DMA operation) does not build as one hunk adds a brace to the first branch
of an if statement without adding at least the correspoding close. Remove
the unwanted brace.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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msg->complete will be called in spi_finalize_current_message().
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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I found that there are two kind of direction type.
First one is dma_data_direction defined in include/linux/dma-direction.h.
It is used for parameter of dma_map/unmap_single in spi-s3c64xx.
The other one is dma_transter_direction defined in include/linux/dmaengine.h.
It is used for direction of samsung DMA operation
(arch/arm/plat-samsung/dma-ops.c).
This patch is just some changes to use direction defines
which is used in samsung DMA operation.
Signed-off-by: Boojin Kim <boojin.kim@samsung.com>
Signed-off-by: Kyoungil Kim <ki0351.kim@samsung.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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Convert the s3c64xx driver to using the new message queue factored out of
the pl022 driver by Linus Walleij, saving us a nice block of code and
getting the benefits of improvements implemented in the core.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc
Conflicts:
drivers/spi/spi-s3c64xx.c
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Enable and disable the clocks to the SPI controller using runtime PM. This
serves the dual purpose of reducing power consumption a little and letting
the core know when the device is idle.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
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In preparation for the addition of runtime PM ops.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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Although the hardware supports interrupts we're not currently using them
at all since for small transfers the overhead is greater than that for
busy waiting and for large transfers we have interrupts from the DMA.
This means that if the hardware reports an error (especially one which
might not stall transfer) we might miss it.
Take a first pass at dealing with such errors by enabling the interrupt
if we can and logging the errors if they happen. Ideally we'd report the
error via the affected transfer but since we're in master mode it's very
difficult to trigger errors at present and this code is much simpler.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
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This patch modifies the driver to stop depending on the
clock names being passed from platform and switch over
to lookup clocks generic names using clkdev
Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
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This patch modifies to merge the dma control code. Original
s3c64xx spi driver has each dma control code for rx and tx
channel. This patch merges these dma control codes into one.
With this patch, a dma setup function and callback function
handle for both rx and tx channel.
Signed-off-by: Boojin Kim <boojin.kim@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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This patch adds to support DMA generic API to transfer raw
SPI data. Basiclly the spi driver uses DMA generic API if
architecture supports it. Otherwise, uses Samsung specific
S3C-PL330 APIs.
Signed-off-by: Boojin Kim <boojin.kim@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
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* 'spi/next' of git://git.secretlab.ca/git/linux-2.6: (34 commits)
spi/imx: add device tree probe support
spi/imx: copy gpio number passed by platform data into driver private data
spi/imx: use soc name in spi device type naming scheme
spi/imx: merge type SPI_IMX_VER_0_7 into SPI_IMX_VER_0_4
spi/imx: do not use spi_imx2_3 to name SPI_IMX_VER_2_3 function and macro
spi/imx: use mx21 to name SPI_IMX_VER_0_0 function and macro
spi/imx: do not make copy of spi_imx_devtype_data
spi/dw: Add spi number into spi irq desc
spi/tegra: Use engineering names in DT compatible property
spi/fsl_spi: fix CPM spi driver
mach-s3c2410: remove unused spi-gpio.h file
spi: remove obsolete spi-s3c24xx-gpio driver
mach-gta2: remove unused spi-gpio.h include
mach-qt2410: convert to spi_gpio
mach-jive: convert to spi_gpio
spi/pxa2xx: Remove unavailable ssp_type from documentation
spi/bfin_spi: uninline fat queue funcs
spi/bfin_spi: constify pin array
spi/bfin_spi: use structs for accessing hardware regs
spi/topcliff-pch: Support new device ML7223 IOH
...
Fix up trivial conflict in arch/arm/mach-ep93xx/Makefile
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Sort the SPI makefile and enforce the naming convention spi_*.c for
spi drivers.
This change also rolls the contents of atmel_spi.h into the .c file
since there is only one user of that particular include file.
v2: - Use 'spi-' prefix instead of 'spi_' to match what seems to be
be the predominant pattern for subsystem prefixes.
- Clean up filenames in Kconfig and header comment blocks
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
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