62 	struct mutex		io_mutex;  member
203 	mutex_init(&dev->io_mutex);  in yurex_probe()
320 	mutex_lock(&dev->io_mutex);  in yurex_disconnect()
322 	mutex_unlock(&dev->io_mutex);  in yurex_disconnect()
377 	mutex_lock(&dev->io_mutex);  in yurex_open()
379 	mutex_unlock(&dev->io_mutex);  in yurex_open()
408 	mutex_lock(&dev->io_mutex);  in yurex_read()
410 		mutex_unlock(&dev->io_mutex);  in yurex_read()
417 	mutex_unlock(&dev->io_mutex);  in yurex_read()
443 	mutex_lock(&dev->io_mutex);  in yurex_write()
445 		mutex_unlock(&dev->io_mutex);  in yurex_write()
451 		mutex_unlock(&dev->io_mutex);  in yurex_write()
485 		mutex_unlock(&dev->io_mutex);  in yurex_write()
498 	mutex_unlock(&dev->io_mutex);  in yurex_write()