62 	struct mutex		io_mutex;  member
205 	mutex_init(&dev->io_mutex);  in yurex_probe()
322 	mutex_lock(&dev->io_mutex);  in yurex_disconnect()
324 	mutex_unlock(&dev->io_mutex);  in yurex_disconnect()
379 	mutex_lock(&dev->io_mutex);  in yurex_open()
381 	mutex_unlock(&dev->io_mutex);  in yurex_open()
410 	mutex_lock(&dev->io_mutex);  in yurex_read()
412 		mutex_unlock(&dev->io_mutex);  in yurex_read()
419 	mutex_unlock(&dev->io_mutex);  in yurex_read()
445 	mutex_lock(&dev->io_mutex);  in yurex_write()
447 		mutex_unlock(&dev->io_mutex);  in yurex_write()
453 		mutex_unlock(&dev->io_mutex);  in yurex_write()
487 		mutex_unlock(&dev->io_mutex);  in yurex_write()
500 	mutex_unlock(&dev->io_mutex);  in yurex_write()