kernel/linux.git/drivers/misc/mei/interrupt.c, branch v5.9.2

mei: adjust the copyright notice in the files.

2019-03-27T17:07:54+00:00

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 Signed-off-by: Greg Kroah-Hartman

mei: convert to SPDX license tags

2019-03-27T17:07:54+00:00

Replace boiler plate licenses texts with the SPDX license identifiers in the mei files header. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: dma ring: implement rx circular buffer logic

2018-11-26T15:59:48+00:00

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 Signed-off-by: Alexander Usyskin Signed-off-by: Greg Kroah-Hartman

mei: add support for variable length mei headers.

2018-08-02T08:18:29+00:00

Remove header size knowledge from me and txe hw layers, this requires to change the write handler to accept header and its length as well as data and its length. HBM messages are fixed to use basic header, hence we add mei_hbm2slots() that converts HBM message length and mei message header, while mei_data2slots() converts data length directly to the slots. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

Merge 4.18-rc5 into char-misc-next

2018-07-16T07:04:54+00:00

We want the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman

mei: check for error returned from mei_hbuf_empty_slots()

2018-07-12T14:23:19+00:00

mei_hbuf_empty_slots() may return with an error in case of circular buffer overflow. This type of error may be caused only by a bug. However currently, the error won't be detected due signed type promotion in comparison to u32. We add explicit check for less then zero and explicit cast in comparison to suppress singn-compare warning. Reported-by: Dan Carpenter Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: discard messages from not connected client during power down.

2018-07-03T11:13:07+00:00

This fixes regression introduced by commit 8d52af6795c0 ("mei: speed up the power down flow") In power down or suspend flow a message can still be received from the FW because the clients fake disconnection. In normal case we interpret messages w/o destination as corrupted and link reset is performed in order to clean the channel, but during power down link reset is already in progress resulting in endless loop. To resolve the issue under power down flow we discard messages silently. Cc: 4.16+ Fixes: 8d52af6795c0 ("mei: speed up the power down flow") Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199541 Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: validate the message header only in first fragment.

2017-06-13T13:46:18+00:00

RX message header is received in the first fragment of the message and saved side and it is not modified after that, we don't need to validate it upon each fragment. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: drop amthif internal client

2017-04-08T15:38:25+00:00

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

mei: replace callback structures used as list head by list_head

2017-01-31T10:07:43+00:00

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