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Commit b8df110f authored Oct 10, 2005 by David S. Miller

[SPARC64]: Fix oops on runlevel change with serial console.



Incorrect uart_write_wakeup() calls cause reference to a
NULL tty pointer in sunsab and sunzilog serial drivers.

Signed-off-by: David S. Miller <davem@davemloft.net>

parent 907a4261

drivers/serial/sunsab.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -274,7 +274,6 @@ static void transmit_chars(struct uart_sunsab_port *up,
		if (uart_circ_empty(xmit) \|\| uart_tx_stopped(&up->port)) {
		up->interrupt_mask1 \|= SAB82532_IMR1_XPR;
		writeb(up->interrupt_mask1, &up->regs->w.imr1);
		uart_write_wakeup(&up->port);
		return;
		}

drivers/serial/sunzilog.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -517,10 +517,9 @@ static void sunzilog_transmit_chars(struct uart_sunzilog_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;