kernel.git/drivers/misc/mei/main.c, branch linux-4.12.y

mei: implement fsync

2017-04-08T15:38:25Z

When write() returns successfully, it is only assumed that a message was successfully queued. Add fsync syscall implementation to help user-space ensure that all data is written. Signed-off-by: Tomas Winkler Signed-off-by: Alexander Usyskin Signed-off-by: Greg Kroah-Hartman

mei: drop amthif internal client

2017-04-08T15:38:25Z

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 Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

sched/headers: Prepare to move signal wakeup & sigpending methods from into

2017-03-02T07:42:32Z

Fix up affected files that include this signal functionality via sched.h. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

mei: remove support for broken parallel read

2017-02-10T14:20:44Z

Parallel reads from multiple threads on a file descriptor are not well defined and racy. It is safer to return to original behavior and simply fail the additional read. The solution is to remove request for next read credit. Cc: #4.9 Fixes: ff1586a7ea57 ("mei: enqueue consecutive reads") Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: enable to set the internal flag for client write

2016-11-10T12:18:02Z

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 Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: show the HBM protocol versions in the device attributes

2016-10-31T10:00:09Z

The HBM protocol version is negotiated during the setup phase, then settled on a highest possible common version of the driver and the firmware. The sysfs API advertises both negotiated and driver supported versions in the device attributes. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: amthif: drop mei_amthif_read

2016-08-30T12:39:42Z

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 Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: enqueue consecutive reads

2016-08-30T12:39:42Z

The FW supports only one pending read per host client, in order to support issuing of consecutive reads the driver queues read requests internally and send them to the firmware after pending one has completed. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: add wrapper for queuing control commands.

2016-08-30T12:39:42Z

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 Signed-off-by: Greg Kroah-Hartman

mei: add file pointer to the host client structure

2016-08-30T12:36:39Z

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 Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman