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* psci: Add accessor for psci_0_1_function_idsDavid Brazdil2020-12-041-7/+5
| | | | | | | | | | Make it possible to retrieve a copy of the psci_0_1_function_ids struct. This is useful for KVM if it is configured to intercept host's PSCI SMCs. Signed-off-by: David Brazdil <dbrazdil@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20201202184122.26046-7-dbrazdil@google.com
* psci: Replace psci_function_id array with a structDavid Brazdil2020-12-041-15/+14
| | | | | | | | | | | | | Small refactor that replaces array of v0.1 function IDs indexed by an enum of function-name constants with a struct of function IDs "indexed" by field names. This is done in preparation for exposing the IDs to other parts of the kernel. Exposing a struct avoids the need for bounds checking. Signed-off-by: David Brazdil <dbrazdil@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20201202184122.26046-6-dbrazdil@google.com
* psci: Split functions to v0.1 and v0.2+ variantsDavid Brazdil2020-12-041-34/+60
| | | | | | | | | | | | | | Refactor implementation of v0.1+ functions (CPU_SUSPEND, CPU_OFF, CPU_ON, MIGRATE) to have two functions psci_0_1_foo / psci_0_2_foo that select the function ID and call a common helper __psci_foo. This is a small cleanup so that the function ID array is only used for v0.1 configurations. Signed-off-by: David Brazdil <dbrazdil@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20201202184122.26046-5-dbrazdil@google.com
* psci: Support psci_ops.get_version for v0.1David Brazdil2020-12-041-3/+10
| | | | | | | | | | | | | | | | KVM's host PSCI SMC filter needs to be aware of the PSCI version of the system but currently it is impossible to distinguish between v0.1 and PSCI disabled because both have get_version == NULL. Populate get_version for v0.1 with a function that returns a constant. psci_opt.get_version is currently unused so this has no effect on existing functionality. Signed-off-by: David Brazdil <dbrazdil@google.com> Signed-off-by: Marc Zyngier <maz@kernel.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20201202184122.26046-4-dbrazdil@google.com
* firmware: psci: Extend psci_set_osi_mode() to allow reset to PC modeUlf Hansson2020-09-221-5/+7
| | | | | | | | | | | | | | The current user (cpuidle-psci) of psci_set_osi_mode() only needs to enable the PSCI OSI mode. Although, as subsequent changes shows, there is a need to be able to reset back into the PSCI PC mode. Therefore, let's extend psci_set_osi_mode() to take a bool as in-parameter, to let the user indicate whether to enable OSI or to switch back to PC mode. Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge tag 'sched-fifo-2020-08-04' of ↵Linus Torvalds2020-08-061-9/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull sched/fifo updates from Ingo Molnar: "This adds the sched_set_fifo*() encapsulation APIs to remove static priority level knowledge from non-scheduler code. The three APIs for non-scheduler code to set SCHED_FIFO are: - sched_set_fifo() - sched_set_fifo_low() - sched_set_normal() These are two FIFO priority levels: default (high), and a 'low' priority level, plus sched_set_normal() to set the policy back to non-SCHED_FIFO. Since the changes affect a lot of non-scheduler code, we kept this in a separate tree" * tag 'sched-fifo-2020-08-04' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits) sched,tracing: Convert to sched_set_fifo() sched: Remove sched_set_*() return value sched: Remove sched_setscheduler*() EXPORTs sched,psi: Convert to sched_set_fifo_low() sched,rcutorture: Convert to sched_set_fifo_low() sched,rcuperf: Convert to sched_set_fifo_low() sched,locktorture: Convert to sched_set_fifo() sched,irq: Convert to sched_set_fifo() sched,watchdog: Convert to sched_set_fifo() sched,serial: Convert to sched_set_fifo() sched,powerclamp: Convert to sched_set_fifo() sched,ion: Convert to sched_set_normal() sched,powercap: Convert to sched_set_fifo*() sched,spi: Convert to sched_set_fifo*() sched,mmc: Convert to sched_set_fifo*() sched,ivtv: Convert to sched_set_fifo*() sched,drm/scheduler: Convert to sched_set_fifo*() sched,msm: Convert to sched_set_fifo*() sched,psci: Convert to sched_set_fifo*() sched,drbd: Convert to sched_set_fifo*() ...
| * sched: Remove sched_set_*() return valuePeter Zijlstra2020-06-151-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ingo suggested that since the new sched_set_*() functions are implemented using the 'nocheck' variants, they really shouldn't ever fail, so remove the return value. Cc: axboe@kernel.dk Cc: daniel.lezcano@linaro.org Cc: sudeep.holla@arm.com Cc: airlied@redhat.com Cc: broonie@kernel.org Cc: paulmck@kernel.org Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org>
| * sched,psci: Convert to sched_set_fifo*()Peter Zijlstra2020-06-151-9/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Because SCHED_FIFO is a broken scheduler model (see previous patches) take away the priority field, the kernel can't possibly make an informed decision. Effectively changes prio from 99 to 50. XXX this thing is horrific, it basically open-codes a stop-machine and idle. Cc: daniel.lezcano@linaro.org Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Ingo Molnar <mingo@kernel.org> Acked-by: Valentin Schneider <valentin.schneider@arm.com> Tested-by: Sudeep Holla <sudeep.holla@arm.com>
* | drivers/firmware/psci: Assign @err directly in hotplug_tests()Gavin Shan2020-07-081-2/+1
| | | | | | | | | | | | | | | | | | | | The return value of down_and_up_cpus() can be assigned to @err directly. With that, the useless assignment to @err with zero can be dropped. Signed-off-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20200630075943.203954-1-gshan@redhat.com Signed-off-by: Will Deacon <will@kernel.org>
* | drivers/firmware/psci: Fix memory leakage in alloc_init_cpu_groups()Gavin Shan2020-07-081-1/+4
|/ | | | | | | | | | | | The CPU mask (@tmp) should be released on failing to allocate @cpu_groups or any of its elements. Otherwise, it leads to memory leakage because the CPU mask variable is dynamically allocated when CONFIG_CPUMASK_OFFSTACK is enabled. Signed-off-by: Gavin Shan <gshan@redhat.com> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20200630075227.199624-1-gshan@redhat.com Signed-off-by: Will Deacon <will@kernel.org>
* firmware: smccc: Fix missing prototype warning for arm_smccc_version_initSudeep Holla2020-05-211-1/+0
| | | | | | | | | | | | | | | | | Commit f2ae97062a48 ("firmware: smccc: Refactor SMCCC specific bits into separate file") introduced the following build warning: drivers/firmware/smccc/smccc.c:14:13: warning: no previous prototype for function 'arm_smccc_version_init' [-Wmissing-prototypes] void __init arm_smccc_version_init(u32 version, enum arm_smccc_conduit conduit) ^~~~~~~~~~~~~~~~~~~~~~ Fix the same by adding the missing prototype in arm-smccc.h Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20200521110836.57252-1-sudeep.holla@arm.com Signed-off-by: Will Deacon <will@kernel.org>
* firmware: smccc: Refactor SMCCC specific bits into separate fileSudeep Holla2020-05-201-15/+5
| | | | | | | | | | | | | | | | | | In order to add newer SMCCC v1.1+ functionality and to avoid cluttering PSCI firmware driver with SMCCC bits, let us move the SMCCC specific details under drivers/firmware/smccc/smccc.c We can also drop conduit and smccc_version from psci_operations structure as SMCCC was the sole user and now it maintains those. No functionality change in this patch though. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Etienne Carriere <etienne.carriere@st.com> Reviewed-by: Etienne Carriere <etienne.carriere@st.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20200518091222.27467-6-sudeep.holla@arm.com Signed-off-by: Will Deacon <will@kernel.org>
* firmware: smccc: Drop smccc_version enum and use ARM_SMCCC_VERSION_1_x insteadSudeep Holla2020-05-201-4/+4
| | | | | | | | | | | | | | | | | Instead of maintaining 2 sets of enums/macros for tracking SMCCC version, let us drop smccc_version enum and use ARM_SMCCC_VERSION_1_x directly instead. This is in preparation to drop smccc_version here and move it separately under drivers/firmware/smccc. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Tested-by: Etienne Carriere <etienne.carriere@st.com> Reviewed-by: Steven Price <steven.price@arm.com> Reviewed-by: Etienne Carriere <etienne.carriere@st.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/r/20200518091222.27467-5-sudeep.holla@arm.com Signed-off-by: Will Deacon <will@kernel.org>
* firmware: psci: Replace cpu_up/down() with add/remove_cpu()Qais Yousef2020-03-251-2/+2
| | | | | | | | | | | | | | | | | The core device API performs extra housekeeping bits that are missing from directly calling cpu_up/down(). See commit a6717c01ddc2 ("powerpc/rtas: use device model APIs and serialization during LPM") for an example description of what might go wrong. This also prepares to make cpu_up/down a private interface of the CPU subsystem. Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Link: https://lkml.kernel.org/r/20200323135110.30522-15-qais.yousef@arm.com
* firmware: psci: Export functions to manage the OSI modeUlf Hansson2020-01-021-2/+16
| | | | | | | | | | | | | | To allow subsequent changes to implement support for OSI mode through the cpuidle-psci driver, export the existing psci_has_osi_support(). Export also a new function, psci_set_osi_mode(), that allows its caller to enable the OS-initiated CPU-suspend mode in the PSCI FW. To deal with backwards compatibility for a kernel started through a kexec call, default to set the CPU-suspend mode to the Platform Coordinated mode during boot. Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
* firmware/psci: use common SMCCC_CONDUIT_*Mark Rutland2019-10-141-16/+9
| | | | | | | | | | | | Now that we have common SMCCC_CONDUIT_* definitions, migrate the PSCI code over to them, and kill off the old PSCI_CONDUIT_* definitions. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* arm/arm64: smccc/psci: add arm_smccc_1_1_get_conduit()Mark Rutland2019-10-141-0/+15
| | | | | | | | | | | | | | | | | | SMCCC callers are currently amassing a collection of enums for the SMCCC conduit, and are having to dig into the PSCI driver's internals in order to figure out what to do. Let's clean this up, with common SMCCC_CONDUIT_* definitions, and an arm_smccc_1_1_get_conduit() helper that abstracts the PSCI driver's internal state. We can kill off the PSCI_CONDUIT_* definitions once we've migrated users over to the new interface. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
* PSCI: cpuidle: Refactor CPU suspend power_state parameter handlingLorenzo Pieralisi2019-08-091-149/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current PSCI code handles idle state entry through the psci_cpu_suspend_enter() API, that takes an idle state index as a parameter and convert the index into a previously initialized power_state parameter before calling the PSCI.CPU_SUSPEND() with it. This is unwieldly, since it forces the PSCI firmware layer to keep track of power_state parameter for every idle state so that the index->power_state conversion can be made in the PSCI firmware layer instead of the CPUidle driver implementations. Move the power_state handling out of drivers/firmware/psci into the respective ACPI/DT PSCI CPUidle backends and convert the psci_cpu_suspend_enter() API to get the power_state parameter as input, which makes it closer to its firmware interface PSCI.CPU_SUSPEND() API. A notable side effect is that the PSCI ACPI/DT CPUidle backends now can directly handle (and if needed update) power_state parameters before handing them over to the PSCI firmware interface to trigger PSCI.CPU_SUSPEND() calls. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Signed-off-by: Will Deacon <will@kernel.org>
* ARM: psci: cpuidle: Enable PSCI CPUidle driverLorenzo Pieralisi2019-08-091-10/+0
| | | | | | | | | | | | | | | | | | | | | Allow selection of the PSCI CPUidle in the kernel by updating the respective Kconfig entry. Remove PSCI callbacks from ARM/ARM64 generic CPU ops to prevent the PSCI idle driver from clashing with the generic ARM CPUidle driver initialization, that relies on CPU ops to initialize and enter idle states. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Cc: Will Deacon <will@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Signed-off-by: Will Deacon <will@kernel.org>
* drivers: firmware: psci: Decouple checker from generic ARM CPUidleLorenzo Pieralisi2019-08-091-9/+7
| | | | | | | | | | | | | | | | | | | | | | | | | The PSCI checker currently relies on the generic ARM CPUidle infrastructure to enter an idle state, which in turn creates a dependency that is not really needed. The PSCI checker code to test PSCI CPU suspend is built on top of the CPUidle framework and can easily reuse the struct cpuidle_state.enter() function (previously initialized by an idle driver, with a PSCI back-end) to trigger an entry into an idle state, decoupling the PSCI checker from the generic ARM CPUidle infrastructure and simplyfing the code in the process. Convert the PSCI checker suspend entry function to use the struct cpuidle_state.enter() function callback. Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Cc: Sudeep Holla <sudeep.holla@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Will Deacon <will@kernel.org>
* firmware/psci: psci_checker: Park kthreads before stopping themJean-Philippe Brucker2019-06-171-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since commit 85f1abe0019f ("kthread, sched/wait: Fix kthread_parkme() completion issue"), kthreads that are bound to a CPU must be parked before being stopped. At the moment the PSCI checker calls kthread_stop() directly on the suspend kthread, which triggers the following warning: [ 6.068288] WARNING: CPU: 1 PID: 1 at kernel/kthread.c:398 __kthread_bind_mask+0x20/0x78 ... [ 6.190151] Call trace: [ 6.192566] __kthread_bind_mask+0x20/0x78 [ 6.196615] kthread_unpark+0x74/0x80 [ 6.200235] kthread_stop+0x44/0x1d8 [ 6.203769] psci_checker+0x3bc/0x484 [ 6.207389] do_one_initcall+0x48/0x260 [ 6.211180] kernel_init_freeable+0x2c8/0x368 [ 6.215488] kernel_init+0x10/0x100 [ 6.218935] ret_from_fork+0x10/0x1c [ 6.222467] ---[ end trace e05e22863d043cd3 ]--- kthread_unpark() tries to bind the thread to its CPU and aborts with a WARN() if the thread wasn't in TASK_PARKED state. Park the kthreads before stopping them. Fixes: 85f1abe0019f ("kthread, sched/wait: Fix kthread_parkme() completion issue") Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Olof Johansson <olof@lixom.net>
* treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174Thomas Gleixner2019-05-302-16/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner2019-05-211-0/+1
| | | | | | | | | | | | | | Add SPDX license identifiers to all Make/Kconfig files which: - Have no license information of any form These files fall under the project license, GPL v2 only. The resulting SPDX license identifier is: GPL-2.0-only Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* firmware/psci: add support for SYSTEM_RESET2Sudeep Holla2019-04-161-1/+23
| | | | | | | | | | | | | | | PSCI v1.1 introduced SYSTEM_RESET2 to allow both architectural resets where the semantics are described by the PSCI specification itself as well as vendor-specific resets. Currently only system warm reset semantics is defined as part of architectural resets by the specification. This patch implements support for SYSTEM_RESET2 by making using of reboot_mode passed by the reboot infrastructure in the kernel. Acked-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* drivers: firmware: psci: Announce support for OS initiated suspend modeUlf Hansson2019-04-121-1/+20
| | | | | | | | | | | | | | | | | PSCI firmware v1.0+, supports two different modes for CPU_SUSPEND. The Platform Coordinated mode, which is the default and mandatory mode, while support for the OS initiated (OSI) mode is optional. In some cases it's interesting for the user/developer to know if the OSI mode is supported by the PSCI FW, so print a message to the log if that is the case. Co-developed-by: Lina Iyer <lina.iyer@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* drivers: firmware: psci: Simplify error path of psci_dt_init()Ulf Hansson2019-04-121-13/+10
| | | | | | | | | | | | | Instead of having each PSCI init function taking care of the of_node_put(), deal with that from psci_dt_init(), as this enables a bit simpler error path for each PSCI init function. Co-developed-by: Lina Iyer <lina.iyer@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* drivers: firmware: psci: Split psci_dt_cpu_init_idle()Ulf Hansson2019-04-121-19/+23
| | | | | | | | | | | | Split the psci_dt_cpu_init_idle() function into two functions. This makes the code clearer and provides better re-usability. Co-developed-by: Lina Iyer <lina.iyer@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* drivers: firmware: psci: Move psci to separate directoryUlf Hansson2019-04-124-0/+1230
Some following changes extends the PSCI driver with some additional files. Avoid to continue cluttering the toplevel firmware directory and first move the PSCI files into a PSCI sub-directory. Suggested-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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