serial: bfin_5xx: add missing spin_lock init

commit 9c529a3d76dffae943868ebad07b042d15764712 upstream.

The Blackfin serial driver never initialized the spin_lock that is part of
the serial core structure, but we never noticed because spin_lock's are
rarely enabled on UP systems.  Yeah lockdep and friends.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index d86123e03391e97623103682271da36f51350ab2..3515c5d7bdeef75d6059e644a498b71c08510efa 100644 (file)
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -1058,6 +1058,7 @@ static void __init bfin_serial_init_ports(void)
        bfin_serial_hw_init();
 
        for (i = 0; i < nr_active_ports; i++) {
+               spin_lock_init(&bfin_serial_ports[i].port.lock);
                bfin_serial_ports[i].port.uartclk   = get_sclk();
                bfin_serial_ports[i].port.fifosize  = BFIN_UART_TX_FIFO_SIZE;
                bfin_serial_ports[i].port.ops       = &bfin_serial_pops;