mei: allow read concurrency

[firefly-linux-kernel-4.4.55.git] / drivers / misc / mei / init.c

diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 9306219d5675442b186b0ab6381fdd246ad09e60..4596401888e571e82d646c444b50828a06d25774 100644 (file)
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -387,6 +387,7 @@ void mei_device_init(struct mei_device *dev,
        INIT_LIST_HEAD(&dev->device_list);
        INIT_LIST_HEAD(&dev->me_clients);
        mutex_init(&dev->device_lock);
+       init_rwsem(&dev->me_clients_rwsem);
        init_waitqueue_head(&dev->wait_hw_ready);
        init_waitqueue_head(&dev->wait_pg);
        init_waitqueue_head(&dev->wait_hbm_start);
@@ -394,7 +395,6 @@ void mei_device_init(struct mei_device *dev,
        dev->dev_state = MEI_DEV_INITIALIZING;
        dev->reset_count = 0;
 
-       mei_io_list_init(&dev->read_list);
        mei_io_list_init(&dev->write_list);
        mei_io_list_init(&dev->write_waiting_list);
        mei_io_list_init(&dev->ctrl_wr_list);