diff options
| author | Tomas Winkler | 2015-07-23 14:08:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2015-08-04 02:21:59 +0200 |
| commit | 0ff0a8d853039aa60bba3ca3e04e4fb74584a736 (patch) | |
| tree | d3d3edd20665003e60e6b76794d76418eda7b640 /drivers/misc | |
| parent | mei: bus: add reference to bus device in struct mei_cl_client (diff) | |
| download | kernel-qcow2-linux-0ff0a8d853039aa60bba3ca3e04e4fb74584a736.tar.gz kernel-qcow2-linux-0ff0a8d853039aa60bba3ca3e04e4fb74584a736.tar.xz kernel-qcow2-linux-0ff0a8d853039aa60bba3ca3e04e4fb74584a736.zip | |
mei: bus: add me client device list infrastructure
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 <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/mei/bus.c | 1 | ||||
| -rw-r--r-- | drivers/misc/mei/init.c | 1 | ||||
| -rw-r--r-- | drivers/misc/mei/mei_dev.h | 6 |
3 files changed, 6 insertions, 2 deletions
diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c index 963731eb4383..34b14dda050c 100644 --- a/drivers/misc/mei/bus.c +++ b/drivers/misc/mei/bus.c @@ -657,6 +657,7 @@ struct mei_cl_device *mei_cl_add_device(struct mei_device *bus, cldev->dev.bus = &mei_cl_bus_type; cldev->dev.type = &mei_cl_device_type; cldev->bus = mei_dev_bus_get(bus); + INIT_LIST_HEAD(&cldev->bus_list); strlcpy(cldev->name, name, sizeof(cldev->name)); diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 00c3865ca3b1..15000e9231b1 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -390,6 +390,7 @@ void mei_device_init(struct mei_device *dev, INIT_LIST_HEAD(&dev->me_clients); mutex_init(&dev->device_lock); init_rwsem(&dev->me_clients_rwsem); + mutex_init(&dev->cl_bus_lock); init_waitqueue_head(&dev->wait_hw_ready); init_waitqueue_head(&dev->wait_pg); init_waitqueue_head(&dev->wait_hbm_start); diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index bc65fb42aea9..882e6f77084a 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -178,7 +178,7 @@ struct mei_fw_status { * @client_id: me client id * @mei_flow_ctrl_creds: flow control credits * @connect_count: number connections to this client - * @reserved: reserved + * @bus_added: added to bus */ struct mei_me_client { struct list_head list; @@ -187,7 +187,7 @@ struct mei_me_client { u8 client_id; u8 mei_flow_ctrl_creds; u8 connect_count; - u8 reserved; + u8 bus_added; }; @@ -447,6 +447,7 @@ const char *mei_pg_state_str(enum mei_pg_state state); * @reset_work : work item for the device reset * * @device_list : mei client bus list + * @cl_bus_lock : client bus list lock * * @dbgfs_dir : debugfs mei root directory * @@ -543,6 +544,7 @@ struct mei_device { /* List of bus devices */ struct list_head device_list; + struct mutex cl_bus_lock; #if IS_ENABLED(CONFIG_DEBUG_FS) struct dentry *dbgfs_dir; |