66 	struct mutex		io_mutex;  member
208 	mutex_init(&dev->io_mutex);  in yurex_probe()
335 	mutex_lock(&dev->io_mutex);  in yurex_disconnect()
337 	mutex_unlock(&dev->io_mutex);  in yurex_disconnect()
392 	mutex_lock(&dev->io_mutex);  in yurex_open()
394 	mutex_unlock(&dev->io_mutex);  in yurex_open()
423 	mutex_lock(&dev->io_mutex);  in yurex_read()
443 	mutex_unlock(&dev->io_mutex);  in yurex_read()
464 	mutex_lock(&dev->io_mutex);  in yurex_write()
466 		mutex_unlock(&dev->io_mutex);  in yurex_write()
472 		mutex_unlock(&dev->io_mutex);  in yurex_write()
505 		mutex_unlock(&dev->io_mutex);  in yurex_write()
518 	mutex_unlock(&dev->io_mutex);  in yurex_write()