kernel/linux.git/drivers/misc/mei/init.c, branch linux-4.3.y

mei: bus: link client devices instead of host clients

2015-08-04T00:24:48+00:00

MEI bus was designed around nfc and was hard to extend. Instead of the hard coded way of adding the devices on the mei bus we scan the whole me client list and create a device for each eligible me client (mei_cl_bus_rescan); currently we support only clients with single connection and fixed address clients. NFC radio name detection is run as a fixup routine The patch replaces handling the device list based on struct me_cl to device list based on me_cl_devices. The creating a connection is pushed from the device creation time to device enablement. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: bus: add me client device list infrastructure

2015-08-04T00:21:59+00:00

Instead of holding the list of host clients (me_cl) we want to keep the list me client devices (mei_cl_device) This way we can create host to me client connection only when needed. Add list head to mei_cl_device and cl_bus_lock Add bus_added flag to the me client (mei_me_client) to track if the appropriate mei_cl_device was already created and is_added flag to mei_cl_device to track if it was already added to the device list across the bus rescans Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: nfc: fix deadlock on shutdown/suspend path

2015-07-07T22:04:12+00:00

In function mei_nfc_host_exit mei_cl_remove_device cannot be called under the device mutex as device removing flow invokes the device driver remove handler that calls in turn to mei_cl_disable_device which naturally acquires the device mutex. Also remove mei_cl_bus_remove_devices which has the same issue, but is never executed as currently the only device on the mei client bus is NFC and a new device cannot be easily added till the bus revamp is completed. This fixes regression caused by commit be9b720a0ccb ("mei_phy: move all nfc logic from mei driver to nfc") Prior to this change the nfc driver remove handler called to no-op disable function while actual nfc device was disabled directly from the mei driver. Reported-by: Linus Torvalds Acked-by: Greg Kroah-Hartman Cc: Samuel Ortiz Signed-off-by: Tomas Winkler Signed-off-by: Linus Torvalds

mei: add also write waiting list to runtime pm blockers

2015-05-24T18:15:54+00:00

The io callback is clear from write_waitling_list after we receive interrupt from the hw to ack the write completion. We need to wait for this interrupt deliver before we try to enter low power state Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

Merge 4.0-rc3 into char-misc-next

2015-03-09T07:44:23+00:00

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

mei: allow read concurrency

2015-03-02T03:37:00+00:00

Replace clunky read state machine with read stack implemented as per client read list, this is important mostly for mei drivers with unsolicited reads Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: revamp me clients list handling

2015-03-02T03:36:59+00:00

1. Use rw lock to access the me_clients list 2. Reuse already defined find functions also when removing particular me client 3. Add wrappers for addition and deletion Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: make device disabled on stop unconditionally

2015-03-02T03:34:50+00:00

Set the internal device state to to disabled after hardware reset in stop flow. This will cover cases when driver was not brought to disabled state because of an error and in stop flow we wish not to retry the reset. Cc: #3.10+ Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: read and print all six FW status registers

2014-11-27T03:06:41+00:00

ME devices prior to PCH8 (Lynx Point) have two FW status registers, on PCH8 and newer excluding txe there are six FW status registers. Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman

mei: fix kernel-doc warnings

2014-09-29T15:56:02+00:00

Add missed parameters descriptions and return values descriptions Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman