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authorDavid Miller <davem@davemloft.net>2014-03-04 15:28:35 -0500
committerDavid S. Miller <davem@davemloft.net>2014-03-06 16:32:25 -0500
commite58e241c1788856f69d58821e91e5c988905252d (patch)
treeaf65c5c6385b28fc4d9af976f0fe8430fdf8429e /drivers/tty/serial/sunhv.c
parentc3bebc71c4bcdafa24b506adf0c1de3c1f77e2e0 (diff)
downloadlinux-e58e241c1788856f69d58821e91e5c988905252d.tar.bz2
sparc: serial: Clean up the locking for -rt
Signed-off-by: David S. Miller <davem@davemloft.net> Tested-by: Allen Pais <allen.pais@oracle.com>
Diffstat (limited to 'drivers/tty/serial/sunhv.c')
-rw-r--r--drivers/tty/serial/sunhv.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c
index cf86e729532b..dc697cee248a 100644
--- a/drivers/tty/serial/sunhv.c
+++ b/drivers/tty/serial/sunhv.c
@@ -433,13 +433,10 @@ static void sunhv_console_write_paged(struct console *con, const char *s, unsign
unsigned long flags;
int locked = 1;
- local_irq_save(flags);
- if (port->sysrq) {
- locked = 0;
- } else if (oops_in_progress) {
- locked = spin_trylock(&port->lock);
- } else
- spin_lock(&port->lock);
+ if (port->sysrq || oops_in_progress)
+ locked = spin_trylock_irqsave(&port->lock, flags);
+ else
+ spin_lock_irqsave(&port->lock, flags);
while (n > 0) {
unsigned long ra = __pa(con_write_page);
@@ -470,8 +467,7 @@ static void sunhv_console_write_paged(struct console *con, const char *s, unsign
}
if (locked)
- spin_unlock(&port->lock);
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&port->lock, flags);
}
static inline void sunhv_console_putchar(struct uart_port *port, char c)
@@ -492,7 +488,10 @@ static void sunhv_console_write_bychar(struct console *con, const char *s, unsig
unsigned long flags;
int i, locked = 1;
- local_irq_save(flags);
+ if (port->sysrq || oops_in_progress)
+ locked = spin_trylock_irqsave(&port->lock, flags);
+ else
+ spin_lock_irqsave(&port->lock, flags);
if (port->sysrq) {
locked = 0;
} else if (oops_in_progress) {
@@ -507,8 +506,7 @@ static void sunhv_console_write_bychar(struct console *con, const char *s, unsig
}
if (locked)
- spin_unlock(&port->lock);
- local_irq_restore(flags);
+ spin_unlock_irqrestore(&port->lock, flags);
}
static struct console sunhv_console = {