Commit c4432c41 authored Mar 07, 2006 by Martin Michlmayr Committed by Russell King Mar 07, 2006

[SERIAL] ip22zilog: Fix oops on runlevel change with serial console



Incorrect uart_write_wakeup() calls cause reference to a NULL tty
pointer.  This has been fixed in the sunsab and sunzilog serial drivers
in October 2005.  Update the ip22zilog, which is based on sunzilog,
accordingly.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

parent 7a171cdc

drivers/serial/ip22zilog.c

+1 −3

Original line number	Diff line number	Diff line
		@@ -420,10 +420,8 @@ static void ip22zilog_transmit_chars(struct uart_ip22zilog_port *up,
		if (up->port.info == NULL)
		goto ack_tx_int;
		xmit = &up->port.info->xmit;
		if (uart_circ_empty(xmit)) {
		uart_write_wakeup(&up->port);
		if (uart_circ_empty(xmit))
		goto ack_tx_int;
		}
		if (uart_tx_stopped(&up->port))
		goto ack_tx_int;