kernel/linux.git/drivers/misc/mei/mei_dev.h, branch linux-4.7.y

mei: amthif: discard not read messages

2016-04-30T21:08:08+00:00

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: #4.2+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: drop global me_client_index

2016-04-30T21:08:08+00:00

Global me_client_index is used only during the enumeration process and can be effectively replaced by me_addr data from the last enumeration response as we always enumerate clients in the increasing order. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: split amthif client init from end of clients enumeration

2016-02-07T22:47:20+00:00

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

mei: hbm: send immediate reply flag in enum request

2016-02-07T22:47:20+00:00

Signal the FW that it can send an HBM enumeration answer immediately, without waiting for FW initialization completion, meaning before all the FW clients are ready and registered. Organize enumeration response options to enum as a byproduct. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: run rescan on me_clients list change

2016-02-07T22:47:20+00:00

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

mei: drop reserved host client ids

2016-02-07T22:47:20+00:00

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

mei: fixed address clients for the new platforms

2016-02-07T22:47:20+00:00

Enable by default connection to fixed address clients from user-space for skylake and newer platform. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: fix notification event delivery

2016-02-07T22:47:20+00:00

Call wake_up cl->ev_wait only in case there is no bus client registered to the event notification. Second, since we don't have exclusive waiter wake_up_interruptible_all is not used correctly here. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: fix RX event scheduling

2016-02-07T22:47:20+00:00

In this particular case this more correct and safer to check if the RX event is set in the event mask rather than query waitqueue_active Since the check is already performed in the mei_cl_bus_rx_event function, it is just required to check for its return value. Second, since we don't have exclusive waiter wake_up_interruptible_all is not used correctly here. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: amthif: replace amthif_rd_complete_list with rd_completed

2016-02-07T22:47:20+00:00

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