summaryrefslogtreecommitdiff
path: root/drivers/serial/sunsu.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/serial/sunsu.c')
-rw-r--r--drivers/serial/sunsu.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/serial/sunsu.c b/drivers/serial/sunsu.c
index 2a63cdba3208..26d720baf88c 100644
--- a/drivers/serial/sunsu.c
+++ b/drivers/serial/sunsu.c
@@ -1288,7 +1288,17 @@ static void sunsu_console_write(struct console *co, const char *s,
unsigned int count)
{
struct uart_sunsu_port *up = &sunsu_ports[co->index];
+ unsigned long flags;
unsigned int ier;
+ int locked = 1;
+
+ local_irq_save(flags);
+ if (up->port.sysrq) {
+ locked = 0;
+ } else if (oops_in_progress) {
+ locked = spin_trylock(&up->port.lock);
+ } else
+ spin_lock(&up->port.lock);
/*
* First save the UER then disable the interrupts
@@ -1304,6 +1314,10 @@ static void sunsu_console_write(struct console *co, const char *s,
*/
wait_for_xmitr(up);
serial_out(up, UART_IER, ier);
+
+ if (locked)
+ spin_unlock(&up->port.lock);
+ local_irq_restore(flags);
}
/*