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path: root/drivers/misc/mei/init.c
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2022-09-12mei: drop ready bits check after startAlexander Usyskin
The check that hardware and host ready bits are set after start is redundant and may fail and disable driver if there is back-to-back link reset issued right after start. This happens during pxp mode transitions when firmware undergo reset. Remove these checks to eliminate such failures. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-14-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2022-09-12mei: gsc: setup gsc extended operational memoryTomas Winkler
1. Retrieve extended operational memory physical pointers from the auxiliary device info. 2. Setup memory registers. 3. Notify firmware that the memory is ready by sending the memory ready command. 4. Disable PXP device if GSC is not in PXP mode. CC: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-12-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2022-09-12mei: extend timeouts on slow devicesAlexander Usyskin
Parametrize operational timeouts in order to support slow firmware on some graphics devices. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-9-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2022-09-12mei: gsc: wait for reset thread on stopAlexander Usyskin
Wait for reset work to complete before initiating stop reset flow sequence. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220907215113.1596567-8-tomas.winkler@intel.com Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2022-02-25mei: do not overwrite state on hw startAlexander Usyskin
During the hardware start sequence, do not overwrite the driver state and do not proceed with the initialization sequence if the state was changed while the driver was waiting for the start interrupt. This can happen if the driver's removal/stop procedure was triggered from the parent level while the driver is waiting for the start interrupt. This may lead to stray the reset work or the timer after driver were removed. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20220215080438.264876-4-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-12-27mei: add POWERING_DOWN into device state printAlexander Usyskin
The POWERING_DOWN state string was missing from the device states list, add it. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20211223094705.204624-1-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-02-06mei: allow clients on bus to communicate in remove callbackAlexander Usyskin
Introduce new intermediate state to allow the clients on the bus to communicate with the firmware from the remove handler. This is to enable to perform a clean shutdown. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20210206144325.25682-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07mei: abstract fw status register read.Tomas Winkler
This is to allow working with mei devices embedded within another pci device, where mei device is represented as a platform child device and fw status registers are not necessarily resident in the device pci config space. Bump the copyright year to 2019 on the modified files. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Link: https://lore.kernel.org/r/20191106223841.15802-4-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-25mei: expose device state in sysfsAlexander Usyskin
Expose mei device state to user-space through sysfs. This gives indication to applications that driver is in transition, usefully mostly to detect link reset state. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-28mei: adjust the copyright notice in the files.Tomas Winkler
Use unified version of the copyright notice in the files Update copyright years according the year the files were touched, except this patch and SPDX conversions. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-03-28mei: convert to SPDX license tagsTomas Winkler
Replace boiler plate licenses texts with the SPDX license identifiers in the mei files header. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-26mei: dma ring: implement rx circular buffer logicTomas Winkler
Implement circular buffer protocol over receive dma buffer. Add extension to the mei message header that holds length of the buffer on the dma buffer. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-14mei: limit the number of queued writesAlexander Usyskin
Limit the number of queued writes per client. Writes above this threshold are blocked till place in the transmit queue is available. The limit is configurable via sysfs and defaults to 50. The implementation should provide blocking I/O behavior. Prior to this change one would end up in the hands of OOM. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-12-13mei: speed up the power down flowTomas Winkler
When mei driver is powering down due to suspend or shutdown it will iterate over the mei client bus and disconnect each client device attached in turn. The power down flow consist of the link rest, which causes all clients get disconnected at once, hence the individual disconnection can be omitted and significantly reduce power down flow. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-06-13mei: drop unreachable code in mei_startAlexander Usyskin
Device disabled state is caught inside the retry loop, so there is no need to check it once again afterwards. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-04-08mei: drop amthif internal clientAlexander Usyskin
AMTHIF has special support in the mei drive, it handles multiplexing multiple user space connection above single me client connection. Since there is no additional addressing information there is a strict requirement on the traffic order on each connection and on the "read after write" order within the connection. This creates a lot of complexity mostly because the other client types do not necessarily fall under the same restriction. After carefully studying the use of the AMTHIF client, we came to conclusion that the multiplexing is not really utilized by any application and we may safely remove that support and significantly simplify the driver. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-16mei: fix deadlock on mei resetTomas Winkler
This patch fixes 'mei: synchronize irq before initiating a reset' The patch had introduced a deadlock between irq thread and mei_reset() as they are both holding the same device lock. ---> device_lock: mei_reset() <---- interrupt thread device_lock ---> synchornize_irq() wait on interrupt thread == (dead lock) The fix is to call synchronize_irq prior to call locked mei_reset function. Cc: <stable@vger.kernel.org> #4.10+ Fixes: f302bb0de6ac (mei: synchronize irq before initiating a reset) Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-31mei: replace callback structures used as list head by list_headAlexander Usyskin
mei_dev structure used struct mei_cl_cb type variables as for holding callbacks list heads. Replace them by the actual struct list_head as there is no other info that is handled. This slims down the mei_dev structure and mostly streamline the code. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-12-06mei: synchronize irq before initiating a reset.Tomas Winkler
We need to synchronize irqs before issuing reset to make sure that the clients communication is concluded and doesn't leak to the reset flow and confusing the state machine. This issue is happening during suspend/resume stress testing. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-09-27mei: stop the stall timer worker if not neededAlexander Usyskin
The stall timer worker checks periodically if there is a stalled i/o transaction. The issue with the current implementation is that the timer is ticking also when there is no pending i/o transaction. This patch provides a simple change that prevents rescheduling of the delayed work when there is no pending i/o. Cc: Andy Lutomirski <luto@kernel.org> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07mei: split amthif client init from end of clients enumerationAlexander Usyskin
The amthif FW client can appear after the end of client enumeration. Amthif host client initialization is done now at FW client discovery time. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07mei: bus: run rescan on me_clients list changeAlexander Usyskin
Since clients can be now added and removed during runtime we need to run bus rescan whenever me_clients list is modified. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07mei: clean write queues and wake waiters on disconnectAlexander Usyskin
Clean write and write_waiting queues in disconnect. Requests in those queues are stale and processing will lead to fat warnings. In multi thread operations on disconnect and in FW disconnect case - write/read/event waiters should end wait and return error. Wake all waiters for disconnecting client to achieve that. Drop wake all and write queue clean on reset, as now we waking all waiters and cleaning write queues on disconnect. No need to do it twice. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07mei: amthif: replace amthif_rd_complete_list with rd_completedTomas Winkler
Now when we have per client rd_completed list we can remove the amthif specific amthif_rd_complete_list. In addition in the function mei_amthif_read do not loop over the rd_completed list like the original code as the code path is unlocked. Reviewed-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-06mei: wd: drop the watchdog code from the core mei driverAlexander Usyskin
Instead of integrating the iAMT watchdog in the mei core driver we will create a watchdog device on the mei client bus and create a driver for it. This patch removes the watchdog code from the mei core driver. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-17mei: cancel driver workers only after client devices were removedTomas Winkler
In process of client devices removal from the bus there still might be communication between a driver and the mei device hence we need to cancel supporting workers only after all the client devices were removed. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-03mei: bus: link client devices instead of host clientsTomas Winkler
MEI bus was designed around nfc and was hard to extend. Instead of the hard coded way of adding the devices on the mei bus we scan the whole me client list and create a device for each eligible me client (mei_cl_bus_rescan); currently we support only clients with single connection and fixed address clients. NFC radio name detection is run as a fixup routine The patch replaces handling the device list based on struct me_cl to device list based on me_cl_devices. The creating a connection is pushed from the device creation time to device enablement. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-08-03mei: bus: add me client device list infrastructureTomas Winkler
Instead of holding the list of host clients (me_cl) we want to keep the list me client devices (mei_cl_device) This way we can create host to me client connection only when needed. Add list head to mei_cl_device and cl_bus_lock Add bus_added flag to the me client (mei_me_client) to track if the appropriate mei_cl_device was already created and is_added flag to mei_cl_device to track if it was already added to the device list across the bus rescans Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-07-07mei: nfc: fix deadlock on shutdown/suspend pathTomas Winkler
In function mei_nfc_host_exit mei_cl_remove_device cannot be called under the device mutex as device removing flow invokes the device driver remove handler that calls in turn to mei_cl_disable_device which naturally acquires the device mutex. Also remove mei_cl_bus_remove_devices which has the same issue, but is never executed as currently the only device on the mei client bus is NFC and a new device cannot be easily added till the bus revamp is completed. This fixes regression caused by commit be9b720a0ccb ("mei_phy: move all nfc logic from mei driver to nfc") Prior to this change the nfc driver remove handler called to no-op disable function while actual nfc device was disabled directly from the mei driver. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-24mei: add also write waiting list to runtime pm blockersTomas Winkler
The io callback is clear from write_waitling_list after we receive interrupt from the hw to ack the write completion. We need to wait for this interrupt deliver before we try to enter low power state Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-09Merge 4.0-rc3 into char-misc-nextGreg Kroah-Hartman
We want the mei fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: allow read concurrencyTomas Winkler
Replace clunky read state machine with read stack implemented as per client read list, this is important mostly for mei drivers with unsolicited reads Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: revamp me clients list handlingTomas Winkler
1. Use rw lock to access the me_clients list 2. Reuse already defined find functions also when removing particular me client 3. Add wrappers for addition and deletion Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: make device disabled on stop unconditionallyAlexander Usyskin
Set the internal device state to to disabled after hardware reset in stop flow. This will cover cases when driver was not brought to disabled state because of an error and in stop flow we wish not to retry the reset. Cc: <stable@vger.kernel.org> #3.10+ Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-26mei: read and print all six FW status registersAlexander Usyskin
ME devices prior to PCH8 (Lynx Point) have two FW status registers, on PCH8 and newer excluding txe there are six FW status registers. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-29mei: fix kernel-doc warningsAlexander Usyskin
Add missed parameters descriptions and return values descriptions Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-29mei: fix KDoc documentation formattingAlexander Usyskin
Fix Kdoc documentation formatting warnings genertaed by ./scripts/kernel-doc Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-29mei: remove include to pci header from mei module filesTomas Winkler
Remove inclusion of linux/pci.h in mei layer however we need to include the headers that before got included implicitly from linux/pci.h. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-29mei: move fw_status back to hw ops handlersTomas Winkler
fw status retrieval has pci specific implementation so we push it back to the hw layer Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-29mei: get rid of most of the pci dependencies in meiTomas Winkler
For purpose of adding testing HW we would like to get rid of pci dependency in generic mei code This patch provides only straight forward changes FW status and prob quirks need to be handled separately Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-29mei: push all standard settings into mei_device_initTomas Winkler
Setting of hw_ops and device has should be in mei_device_init. We add reference to the parent device and remove pci dependent cfg Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-29mei: fix style warning: Missing a blank line after declarationsTomas Winkler
fix new style warning: Missing a blank line after declarations Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-29mei: add hbm and pg state in devstate debugfs printAlexander Usyskin
Add hbm state, pg enablement and state to devstate file in debugfs (<debugfs>/mei/devstate) Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23mei: wait for hbm start non-interruptibleAlexander Usyskin
We cannot handle user interrupt in context of hbm start so we only wait for time out which is reasonably short. 1. Add kdoc 2. Rename state to better reflect its function 3. Simplify wait condition and rename wait_recvd_msg to wait_hbm_start Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-23mei: use list for me clients book keepingTomas Winkler
To support dynamic addition/remove of clients it is more convenient to use list instead of static array Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27mei: add per device configurationAlexander Usyskin
Add mei_cfg structure that holds per device configuration data and hooks, as the first step we add firmware status register offsets Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27mei: fix memory leak of mei_clients arrayTomas Winkler
we never freed the mei_clients array on driver shutdown only on reset add mei_hbm_reset function that wraps the hbm cleanup Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-03mei: extract fw status registersAlexander Usyskin
Fetch FW status registers, as they are important in in understanding of FW reset reasons Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-03mei: add function to check write queuesTomas Winkler
The driver needs to check whether the write queue idle before entering power gating Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-03mei: expose hardware power gating state to mei layerTomas Winkler
Since the runtime pm and the internal power gating cannot be in complete sync in regards to I/O operations, we need to expose the device hardware internal power gating state to mei layer 2. We add pg_state handler that translate the hw internal pg state to mei layer 2. We add power gating event variable to keep power track of power gating transitions Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Reviewed-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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