[Intel-gfx] [PATCH v3 0/2] mei: add timeout to send

[Alexander Usyskin <alexander.usyskin@intel.com>]

When driver wakes up the firmware from the low power state,
it is sending a memory ready message.
The send is done via synchronous/blocking function to ensure
that firmware is in ready state. However, in case of firmware
undergoing reset send might be block forever.
To address this issue a timeout is added to blocking
write command on the internal bus.

Introduce the __mei_cl_send_timeout function to use instead of
__mei_cl_send in cases where timeout is required.
The mei_cl_write has only two callers and there is no need to split
it into two functions.

V2: address review comments:
 - split __mei_cl_send and __mei_cl_send_timeout
 - add units to timeout KDoc
 - use MAX_SCHEDULE_TIMEOUT to squash wait to one macro

V3: - split the state fix into separate patch
    - document define unit
    - expand timeout KDoc

Alexander Usyskin (2):
  mei: add timeout to send
  mei: bus-fixup: change pxp mode only if message was sent

 drivers/misc/mei/bus-fixup.c | 14 +++++++++-----
 drivers/misc/mei/bus.c       | 22 +++++++++++++++++++++-
 drivers/misc/mei/client.c    | 20 ++++++++++++++++----
 drivers/misc/mei/client.h    |  2 +-
 drivers/misc/mei/main.c      |  2 +-
 drivers/misc/mei/mei_dev.h   |  2 ++
 6 files changed, 50 insertions(+), 12 deletions(-)

-- 
2.34.1