On Thu, Apr 19, 2012 at 12:38 AM, Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: >> The point is that wakeups should be enabled whenever driver is in use, >> and disabled when the driver is not in use. > > > Which is the tty_port methods for initialisation and shutdown, which are > mutex protected against each other and hang up. > > Not sure how the uart layer glue exposes that. Is it okay to read the port flags to identify the port state in driver whether the serial port shutdown ops is called from port_suspend or due to port closure. Since port_shutdown gets called even from uart_suspend_port Is things like test_bit(ASYNCB_SUSPENDED, &port->flags); or test_bit(ASYNCB_CLOSING, &port->flags); allowed in low level driver ? -- Thanks, Govindraj.R -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
