diff options
| author | David Miller <davem@davemloft.net> | 2014-03-04 15:28:35 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-03-06 16:32:25 -0500 |
| commit | e58e241c1788856f69d58821e91e5c988905252d (patch) | |
| tree | af65c5c6385b28fc4d9af976f0fe8430fdf8429e /drivers/tty/serial/sunhv.c | |
| parent | c3bebc71c4bcdafa24b506adf0c1de3c1f77e2e0 (diff) | |
| download | op-kernel-dev-e58e241c1788856f69d58821e91e5c988905252d.zip op-kernel-dev-e58e241c1788856f69d58821e91e5c988905252d.tar.gz | |
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.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/tty/serial/sunhv.c b/drivers/tty/serial/sunhv.c index cf86e72..dc697ce 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 = { |
