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

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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>
This commit is contained in:
David S. Miller 2005-10-10 20:43:22 -07:00
parent 907a426179
commit b8df110fea
2 changed files with 2 additions and 4 deletions
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1
drivers/serial/sunsab.c
View File

@ -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;
}

5
drivers/serial/sunzilog.c
View File

@ -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;