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Use Linux style
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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use Linux style
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Some more headers had C++ style SDPX line, fix that and change copyright
so that it is consistent with rest of the code in subsystem
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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No C++ comments in .h files
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Move to the regular help format, --help-- is no longer recommended.
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The CPU accessible DMA memory is general and not used only for PQ.
Accordingly, this patch renames the "free_cpu_pq_dma_mem" label with
"free_cpu_dma_mem".
Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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The CPU accessible DMA pool is general and not used only for PQ.
Accordingly, this patch rename the "free_cpu_pq_pool" label with
"free_cpu_accessible_dma_pool".
Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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Where there is a spike in the CPU consumption, it may cause
random failures in the C/I since the KMD timeout for CPU
and/or QMAN0 jobs expires and it stops communicating to the simulator.
This commit fixes it by increasing timeout on polling functions
if working with simulator.
Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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After removing the parsing of the command submission
when doing memset of the device memory, goya_validate_dma_pkt_host
is never called by the kernel, so there is no need to check
context id.
Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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use_virt_addr member was used for telling whether to treat the
addresses in the CB as virtual during parsing. We disabled it only
when calling the parser from the driver memset device function,
and since this call had been removed, it should always be enabled.
Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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Routing device accesses to the host memory requires the usage of a base
offset, which is canceled by the iATU just before leaving the device.
The value of the base offset might be distinctive between different ASIC
types.
The manipulation of the addresses is currently used throughout the
driver code, and one should be aware to it whenever providing a host
memory address to the device.
This patch removes this manipulation from the driver common code, and
moves it to the ASIC specific functions that are responsible for
host memory allocation/mapping.
Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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This patch renames four functions in the ASIC-specific functions section,
so it will be easier to differentiate them from the generic kernel
functions with the same name.
This will help in future code reviews, to make sure we don't use the
kernel functions directly.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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There is no need to parse the command submission when doing memset
of the device memory using the DMA engine because only the driver calls
the memset function and therefore, the CS is trusted and doesn't require
validation and patching.
Signed-off-by: Dalit Ben Zoor <dbenzoor@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next
Vinod writes:
soundwire updates for v5.2-rc1
This round saw interest from Intel, Linaro and Cadence in
Soundwire. More patches are in pipeline (maybe next cycle)
- removal of useless initialzation in core
- couple of header and kcalloc inversion fixes on Intel driver
* tag 'soundwire-5.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: intel: fix implicit header use of module.h/export.h
soundwire: stream: remove useless initialization of local variable
soundwire: remove useless initializations
soundwire: intel: fix inversion in devm_kcalloc parameters
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The device's CPU accessible memory on host is managed in a dedicated
pool, except for 2 regions - Primary Queue (PQ) and Event Queue (EQ) -
which are allocated from generic DMA pools.
Due to address length limitations of the CPU, the addresses of all these
memory regions must have the same MSBs starting at bit 40.
This patch modifies the allocation of the PQ and EQ to be also from the
dedicated pool, to ensure compliance with the limitation.
Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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This patch changes the ASIC interface function that changes the DRAM bar
window. The change is to return the old address that the DRAM bar pointed
to instead of an error code.
This simplifies the code that use this function (mainly in debugfs) to
restore the bar to the old setting.
This is also needed for easier support in future ASICs.
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into char-misc-next
Mika writes:
thunderbolt: Changes for v5.2 merge window
This improves software connection manager on older Apple systems with
Thunderbolt 1 and 2 controller to support full PCIe daisy chains,
Display Port tunneling and P2P networking. There are also fixes for
potential NULL pointer dereferences at various places in the driver.
* tag 'thunderbolt-for-v5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: (44 commits)
thunderbolt: Make priority unsigned in struct tb_path
thunderbolt: Start firmware on Titan Ridge Apple systems
thunderbolt: Reword output of tb_dump_hop()
thunderbolt: Make rest of the logging to happen at debug level
thunderbolt: Make __TB_[SW|PORT]_PRINT take const parameters
thunderbolt: Add support for XDomain connections
thunderbolt: Make tb_switch_alloc() return ERR_PTR()
thunderbolt: Add support for DMA tunnels
thunderbolt: Add XDomain UUID exchange support
thunderbolt: Run tb_xdp_handle_request() in system workqueue
thunderbolt: Do not tear down tunnels when driver is unloaded
thunderbolt: Add support for Display Port tunnels
thunderbolt: Rework NFC credits handling
thunderbolt: Generalize port finding routines to support all port types
thunderbolt: Scan only valid NULL adapter ports in hotplug
thunderbolt: Add support for full PCIe daisy chains
thunderbolt: Discover preboot PCIe paths the boot firmware established
thunderbolt: Deactivate all paths before restarting them
thunderbolt: Extend tunnel creation to more than 2 adjacent switches
thunderbolt: Add helper function to iterate from one port to another
...
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>From the DS2408 datasheet [1]:
"Resume Command function checks the status of the RC flag and, if it is set,
directly transfers control to the control functions, similar to a Skip ROM
command. The only way to set the RC flag is through successfully executing
the Match ROM, Search ROM, Conditional Search ROM, or Overdrive-Match ROM
command"
The function currently works perfectly fine in a multidrop bus, but when we
have only a single slave connected, then only a Skip ROM is used and Match
ROM is not called at all. This is leading to problems e.g. with single one
DS2408 connected, as the Resume Command is not working properly and the
device is responding with failing results after the Resume Command.
This commit is fixing this by using a Skip ROM instead in those cases.
The bandwidth / performance advantage is exactly the same.
Refs:
[1] https://datasheets.maximintegrated.com/en/ds/DS2408.pdf
Signed-off-by: Mariusz Bialonczyk <manio@skyboo.net>
Reviewed-by: Jean-Francois Dagenais <jeff.dagenais@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fix up mixed declarations and code in aspeed_p2a_mmap.
Tested: Verified the build had the error and that this patch resolved it
and there were no other warnings or build errors associated with
compilation of this driver.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Patrick Venture <venture@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Fixup compiler warnings:
- 108 warning: ISO C90 forbids mixed declarations and code
- 264 warning: unused variable 'value'
- 335 warning: unused variable 'res'
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Patrick Venture <venture@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In case platform_device_alloc fails, the fix returns an error
code to avoid the NULL pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There is an out-of-bounds access to "config[len - 1]" array when the
variable "len" is zero.
See commit dada6a43b040 ("kgdboc: fix KASAN global-out-of-bounds bug
in param_set_kgdboc_var()") for details.
Signed-off-by: Young Xiao <YangX92@hotmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add compatible for i.MX8MQ and add i.MX7D/S, i.MX7ULP and i.M8MQ
to the description.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Abel Vesa <abel.vesa@nxp.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds support for CPU-wide trace scenarios by making sure that
only the sources monitoring the same process have access to a common sink.
Because the sink is shared between sources, the first source to use the
sink switches it on while the last one does the cleanup. Any attempt to
modify the HW is overlooked for as long as more than one source is using
a sink.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds support for CPU-wide trace scenarios by making sure that
only the sources monitoring the same process have access to a common sink.
Because the sink is shared between sources, the first source to use the
sink switches it on while the last one does the cleanup. Any attempt to
modify the HW is overlooked for as long as more than one source is using
a sink.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds support for CPU-wide trace scenarios by making sure that
only the sources monitoring the same process have access to a common sink.
Because the sink is shared between sources, the first source to use the
sink switches it on while the last one does the cleanup. Any attempt to
modify the HW is overlooked for as long as more than one source is using
a sink.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch uses the PID of the process being traced to allocate and free
ETR memory buffers for CPU-wide scenarios. The implementation is tailored
to handle both N:1 and 1:1 source/sink HW topologies.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In CPU-wide scenarios with an N:1 source/sink topology, sources share
the same sink. In order to reuse the same sink for all sources an
IDR is needed to archive events that have already been accounted for.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This patch adds reference counting to struct etr_buf so that, in CPU-wide
trace scenarios, shared buffers can be disposed of when no longer used.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In preparation to support CPU-wide trace scenarios, introduce the notion
of process ID to ETR devices. That way events monitoring the same process
can use the same etr_buf, allowing multiple CPUs to use the same sink.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Buffer allocation is different when dealing with per-thread and
CPU-wide sessions. In preparation to support CPU-wide trace scenarios
simplify things by keeping allocation functions for both type separate.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Refactoring function tmc_etr_setup_perf_buf() so that it only deals
with the high level etr_perf_buffer, leaving the allocation of the
backend buffer (i.e etr_buf) to another function.
That way the backend buffer allocation function can decide if it wants
to reuse an existing buffer (CPU-wide trace scenarios) or simply create
a new one.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Make struct perf_event available to sink buffer allocation functions in
order to use the pid they carry to allocate and free buffer memory along
with regimenting access to what source a sink can collect data for.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Function free_event_data() is already busy and is bound to become
worse with the addition of CPU-wide trace scenarios. As such spin
off a new function to strickly take care of the sink buffers.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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There is no point in allocating sink memory for a trace session if
there is not a way to free it once it is no longer needed. As such make
sure the sink API function to allocate and free memory have been
implemented before moving ahead with the establishment of a trace
session.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When operating in CPU-wide trace scenarios and working with an N:1
source/sink HW topology, update() functions need to be made atomic
in order to avoid racing with start and stop operations.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When disabling a sink the reference counter ensures the operation goes
through if nobody else is using it. As such if drvdata::mode is already
set do CS_MODE_DISABLED, it is an error and should be reported as such.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When operating in CPU-wide mode with an N:1 source/sink HW topology,
multiple CPUs can access a sink concurrently. As such reference counting
needs to happen when the device's spinlock is held to avoid racing with
other operations (start(), update(), stop()), such as:
session A Session B
----- -------
enable_sink
atomic_inc(refcount) = 1
...
atomic_dec(refcount) = 0 enable_sink
if (refcount == 0) disable_sink
atomic_inc()
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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In preparation to handle device reference counting inside of the sink
drivers, add a return code to the sink::disable() operation so that
proper action can be taken if a sink has not been disabled.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Configure timestamps to be emitted at regular intervals in the trace
stream to temporally correlate instructions executed on different CPUs.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Resource selector pair 0 is always implemented and reserved. As such
it should not be explicitly programmed.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Set the proper bit in the configuration register when contextID tracing
has been requested by user space. That way PE_CONTEXT elements are
generated by the tracers when a process is installed on a CPU.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Add to the capabilities the ITRACE property so that ITRACE START events
are generated when the PMU is switched on by the core.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Tested-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Robert Walker <robert.walker@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Drop the power only if we were successful in probing the device.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Drop the power handle only if we were successful. Otherwise
the AMBA bus code would do the rest.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Drop the power only when we have successfully probed. Otherwise
leave it to the amba probe to do the rest.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
[Removed extra newline left after original modification]
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We drop the power before we complete the probe successfully. We
are supposed to drop it only when we are successful. Also, probing
the etb_buffer_length happens with the power turned up. So we don't
need to do that again in the helper.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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With commit c2c729415b2d2132 ("coresight: platform: Cleanup coresight
connection handling"), we switched to re-using coresight_connections
for the coresight_device. However, that introduced a mismatch in the
alloc/free of the connections. The allocation is made using devm_*,
while we use kfree() to release the memory when a device is released
(even though we don't support this at the moment). Fix this by leaving
it to the automatic freeing of the memory.
Fixes: c2c729415b2d2132 ("coresight: platform: Cleanup coresight connection handling")
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge the drivers for the two varieties of replicators into
a singel one. The dynamic replicator has programming base
which can be programmed to filter the trace data. The driver
detects the type based on the "base" address value of the
device, which is NULL for the static device.
Also, while at it, remove the now obsolete DYNAMIC_REPLICATOR
config entry.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Rename the dynamic replicator specific routines for merging with the
replicator driver. Also re-arrange the probe routine to make it easier
to merge.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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