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path: root/drivers/misc/mei/amthif.c
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2017-04-08mei: drop amthif internal clientAlexander Usyskin1-340/+0
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>
2017-01-31mei: revamp io list cleanup function.Tomas Winkler1-27/+7
Specify in function names by which object is the io list filtered: cl for a client and fp for file descriptor. In that course a code duplication is resolved by dropping mei_cl_read_cb_flush and mei_clear_list and using mei_io_list_free_fp function. 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 Usyskin1-6/+5
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>
2017-01-31mei: amthif: allow the read completion after closeTomas Winkler1-1/+1
The amthif client connection is shared over multiple file descriptors. In case a file descriptor was closed immediately after a write, the read credits should be still available so the pending reads can be cleaned from the queue, hence we cannot drop the control read list, this is done only upon connection close. 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>
2016-11-10mei: enable to set the internal flag for client writeAlexander Usyskin1-1/+1
Prepare the client write functions to set the internal flag in message header. Carry both blocking and internal modes inside the transmit cb, and call internal bus function __mei_cl_send() with send mode bit mask. The Internal flag should be added only on messages generated by 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>
2016-09-27mei: stop the stall timer worker if not neededAlexander Usyskin1-0/+1
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>
2016-08-30mei: amthif: fix deadlock in initialization during a resetAlexander Usyskin1-3/+9
The device lock was unnecessary obtained in bus rescan work before the amthif client search. That causes incorrect lock ordering and task hang: ... [88004.613213] INFO: task kworker/1:14:21832 blocked for more than 120 seconds. ... [88004.645934] Workqueue: events mei_cl_bus_rescan_work ... The correct lock order is cl_bus_lock device_lock me_clients_rwsem Move device_lock into amthif init function that called after me_clients_rwsem is released. This fixes regression introduced by commit: commit 025fb792bac3 ("mei: split amthif client init from end of clients enumeration") Cc: <stable@vger.kernel.org> # 4.6+ 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>
2016-08-30mei: amthif: drop mei_amthif_readAlexander Usyskin1-100/+0
mei_amthif_read have only one difference from mei_read, it is not calling mei_read_start(). Make mei_read_start return immediately for amthif client and drop the special mei_amthif_read function. 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>
2016-08-30mei: add wrapper for queuing control commands.Tomas Winkler1-4/+3
Enclose the boiler plate code of allocating a control/hbm command cb and enqueueing it onto ctrl_wr.list in a convenient wrapper mei_cl_enqueue_ctrl_wr_cb(). This is a preparatory patch for enabling consecutive reads. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-08-30mei: rx flow control counterAlexander Usyskin1-0/+1
Use RX flow control counter in the host client structure to track the number of simultaneous outstanding reads. This eliminates search in queues and makes ground for enabling for parallel read. 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>
2016-08-30mei: amthif: drop mei_clear_lists functionAlexander Usyskin1-22/+5
Open code mei_clear_lists into its only caller mei_amthif_releas and drop unused parameter 'dev' form from mei_clear_list function. 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>
2016-08-30mei: add file pointer to the host client structureAlexander Usyskin1-6/+7
Store the file associated with a client in the host client structure, this enables dropping the special amthif client file pointer from struct mei_device, and this is also a preparation for changing the way rx packet allocation for fixed_address clients 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>
2016-08-30mei: fix return value on disconnectionTomas Winkler1-1/+1
Correct errno on client disconnection is -ENODEV not -EBUSY Cc: <stable@vger.kernel.org> #4.3+ 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>
2016-08-30mei: amthif: use mei_cl_alloc_cb for allocating cbsAlexander Usyskin1-13/+3
Use mei_cl_alloc_cb wrapper instead of open code steps 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>
2016-08-30mei: amthif: drop mei_amthif_send_cmdAlexander Usyskin1-36/+16
Incorporate the mei_amthif_send_cmd code into its only caller: mei_amthif_run_next_cmd 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>
2016-08-30mei: amthif: drop iamthif_current_cbAlexander Usyskin1-5/+0
iamthif_current_cb was used in request cancel in amthif code. Now a canceled request is discarded only at the end of the processing and the variable lost its purpose and can be safely removed. 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>
2016-08-30mei: amthif: fix request cancelAlexander Usyskin1-73/+38
Currently, all requests cancelled by the user are immediately removed from the queues. Such removal can cause unexpected behavior in the case when a request is partially written or a reply is received after the request is cancelled. To resolve this a request is always fully processed and the result is discarded in case the request was canceled. This completes the partial fix in commit: 9d04ee1 ("mei: amthif: discard not read messages") 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>
2016-08-30mei: amthif: drop READ_COMPLETE stateAlexander Usyskin1-23/+11
AMTHIF code now uses read completed queue to store replies from the FW. It is possible to send the next request as soon as a read from the FW is completed. With these changes we don't need the READ_COMPLETE 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>
2016-04-30mei: amthif: discard not read messagesAlexander Usyskin1-1/+3
When a message is received and amthif client is not in reading state the message is ignored and left dangling in the queue. This may happen after one of the amthif host connections is closed w/o completing the reading. Another client will pick up a wrong message on next read attempt which will lead to link reset. To prevent this the driver has to properly discard the message when amthif client is not in reading state. Cc: <stable@vger.kernel.org> #4.2+ 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>
2016-02-20mei: fix format string in debug printsAlexander Usyskin1-1/+1
buf_idx type was changed to size_t, and few places missed out to change the print format from %ld to %zu. Use also uz for buf.size which is also of size_t Fixes: commit 56988f22e097 ("mei: fix possible integer overflow issue")' 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 Usyskin1-2/+3
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: drop reserved host client idsAlexander Usyskin1-1/+1
The reserved host clients can be obsoleted now, a portion of the platforms is shipped without iAMT enabled, where the reservation is not relevant and for platforms with iAMT dynamic allocation is sufficient. Dropping reserved ids makes enumeration more flexible and generic 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: interrupt reader on link resetAlexander Usyskin1-1/+7
In case of link reset all waiting readers should be interrupted. 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: use rx_wait queue also for amthif clientAlexander Usyskin1-5/+5
Switch using cl->rx_wait wait queue also for amthif, there is nothing special about amthif in that matter in Rx flow. The cl->wait is reserved for hbm flows and asynchronous events 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: drop parameter validation from mei_amthif_writeTomas Winkler1-9/+1
Remove duplicated parameter validation from mei_amthif_write functions, The parameter check is already performed by the caller function mei_write 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>
2016-02-07mei: amthif: replace amthif_rd_complete_list with rd_completedTomas Winkler1-28/+11
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>
2016-02-07mei: amthif: allow only one request at a timeAlexander Usyskin1-0/+8
A next amthif write can be executed only after the previous one has completed. 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: rename variable names 'file_object' to fpTomas Winkler1-10/+10
The driver uses three names file, fp, and file_object for struct file type. To improve code clarity and adjust to my taste rename file_object to more common and shorter fp. 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>
2016-02-07mei: constify struct file pointerTomas Winkler1-3/+3
The struct file file pointer is used as an opaque handle to for a connected client, for this part the pointer should be immutable and should be set to count. 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>
2016-02-07mei: amthif: don't drop read packets on timeoutAlexander Usyskin1-27/+0
Since the driver now uses a list for storing read packets instead of single variable a pending read is no longer blocking other connections. A pending read will be discarded up the file closure. 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: don't copy from an empty bufferAlexander Usyskin1-1/+1
If empty message come from FW (buf_idx == 0) then the current code will still try to copy data from not filled buffer to the user-space, instead the code should behave the same as when end of a message has been reached, clean resources and return 0 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: fix possible integer overflow issueTomas Winkler1-3/+2
There is a possible integer overflow following by a buffer overflow when accumulating messages coming from the FW to compose a full payload. Occurrence of wrap around has to be prevented for next message size calculation. For unsigned integer the addition overflow has occurred when the result is smaller than one of the arguments. To simplify the fix, the types of buf.size and buf_idx are set to the same width, namely size_t also to be aligned with the type of length parameter in file read/write ops. 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>
2015-10-17mei: amthif: Do not compare bool to 0/1Alexander Usyskin1-1/+1
Spotted by coccicheck: drivers/misc/mei/amthif.c:479:5-26: WARNING: Comparison of bool to 0/1 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>
2015-05-24mei: drop iamthif_mtu from device structureAlexander Usyskin1-8/+1
We can receive mtu with one call now, no need to store it. 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>
2015-05-24mei: add a reference from the host client to the me clientAlexander Usyskin1-15/+4
Keep a pointer to associated me client in the host client object to eliminate me client searches. Check if the me client is active in the firmware by checking if its is linked on the me clients list Add accessors for the me client properties from host client. 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>
2015-04-21Merge tag 'char-misc-4.1-rc1' of ↵Linus Torvalds1-271/+152
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here's the big char/misc driver patchset for 4.1-rc1. Lots of different driver subsystem updates here, nothing major, full details are in the shortlog. All of this has been in linux-next for a while" * tag 'char-misc-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (133 commits) mei: trace: remove unused TRACE_SYSTEM_STRING DTS: ARM: OMAP3-N900: Add lis3lv02d support Documentation: DT: lis302: update wakeup binding lis3lv02d: DT: add wakeup unit 2 and wakeup threshold lis3lv02d: DT: use s32 to support negative values Drivers: hv: hv_balloon: correctly handle num_pages>INT_MAX case Drivers: hv: hv_balloon: correctly handle val.freeram<num_pages case mei: replace check for connection instead of transitioning mei: use mei_cl_is_connected consistently mei: fix mei_poll operation hv_vmbus: Add gradually increased delay for retries in vmbus_post_msg() Drivers: hv: hv_balloon: survive ballooning request with num_pages=0 Drivers: hv: hv_balloon: eliminate jumps in piecewiese linear floor function Drivers: hv: hv_balloon: do not online pages in offline blocks hv: remove the per-channel workqueue hv: don't schedule new works in vmbus_onoffer()/vmbus_onoffer_rescind() hv: run non-blocking message handlers in the dispatch tasklet coresight: moving to new "hwtracing" directory coresight-tmc: Adding a status interface to sysfs coresight: remove the unnecessary configuration coresight-default-sink ...
2015-04-03mei: fix mei_poll operationTomas Winkler1-10/+15
mei_poll returned with POLLIN w/o checking whether the operation has really completed. remove redundant check and locking in amthif specific handler Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-25fs: move struct kiocb to fs.hChristoph Hellwig1-1/+0
struct kiocb now is a generic I/O container, so move it to fs.h. Also do a #include diet for aio.h while we're at it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-03-01mei: simplify io callback disposalTomas Winkler1-14/+10
Simplify disposal of io callback by removing the callback implicitly from its lookup list inside mei_io_cb_free Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: always initialize the callback with the intended operation typeTomas Winkler1-3/+1
We set the operation type at initialization time as each cb is used only for a single type of operation As a byproduct we add a convenient wrapper for allocating cb with the data buffer. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: use only one buffer in callbackTomas Winkler1-4/+4
The callback structure is used exclusively for reading or writing therefore there is no reason to hold both response and request buffers in the callback structure Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: iamthif: use regular client read functionsTomas Winkler1-63/+8
Reduce code duplication in amthif by reusing regular client read functions. The change also removes the need for amthif own buffering Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: iamthif: use client write functionsTomas Winkler1-134/+44
Reduce code duplication in amthif code by reusing regular client write functions. Add completed flag to cb so amthif client can add rx credits on write completion Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: iamthif: send flow control as a regular clientTomas Winkler1-61/+73
Reuse common client mechanism for sending flow control hbm message. Add new function mei_amthif_read_start similar to mei_cl_read_start that puts control flow request onto the control write queue and drop mei_amthif_irq_read function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: iamthif: remove useless iamthif_ioctl variableTomas Winkler1-8/+3
iamthif_ioctl is obsolete and can be safely dropped Currently it is set to true during driver runtime Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-01mei: iamthif: fix device reset on mei_amthif_irq_read_msgTomas Winkler1-28/+48
On failure mei_amthif_irq_read_msg returns an error that will cause device reset but the issue is software one so instead we should propagate error to caller and just clean the read queues. As a side effect also removes useless BUG_ONs Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-25mei: add reference counting for me clientsTomas Winkler1-6/+8
To support dynamic addition and removal of me clients we add reference counter. Update kdoc with locking requirements. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: use local cl variables in wd and amthifTomas Winkler1-4/+6
Use local cl variable instead of dev->iamthif_cl and dev->wd_cl as the first step to use dynamic allocation of these clients as their are not supported on all platforms Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03mei: drop unneeded client NULL check in cb structureAlexander Usyskin1-15/+9
The pointer to client in the callback structure (cb->cl) can't be NULL with current locking. We can drop check and warnings as in some cases this just uselessly complicates the code flow. 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 Usyskin1-2/+3
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>
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