172 	struct mutex		io_lock;	// IO -lock  member
497 	mutex_lock(&mdc800->io_lock);  in mdc800_usb_probe()
502 		mutex_unlock(&mdc800->io_lock);  in mdc800_usb_probe()
543 	mutex_unlock(&mdc800->io_lock);  in mdc800_usb_probe()
567 		mutex_lock(&mdc800->io_lock);  in mdc800_usb_disconnect()
573 		mutex_unlock(&mdc800->io_lock);  in mdc800_usb_disconnect()
625 	mutex_lock(&mdc800->io_lock);  in mdc800_device_open()
662 	mutex_unlock(&mdc800->io_lock);  in mdc800_device_open()
675 	mutex_lock(&mdc800->io_lock);  in mdc800_device_release()
688 	mutex_unlock(&mdc800->io_lock);  in mdc800_device_release()
702 	mutex_lock(&mdc800->io_lock);  in mdc800_device_read()
705 		mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
712 		mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
717 		mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
725 			mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
746 					mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
758 					mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
765 				mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
774 				mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
783 	mutex_unlock(&mdc800->io_lock);  in mdc800_device_read()
799 	mutex_lock(&mdc800->io_lock);  in mdc800_device_write()
802 		mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
807 		mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
816 			mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
822 			mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
843 			mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
856 				mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
870 				mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
878 				mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
892 						mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
911 							mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
939 							mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
949 	mutex_unlock(&mdc800->io_lock);  in mdc800_device_write()
1004 	mutex_init (&mdc800->io_lock);  in usb_mdc800_init()