serial: bfin_5xx: add missing spin_lock init

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>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/serial/bfin_5xx.c b/drivers/serial/bfin_5xx.c
index e2f6b1bfac98..d7fcca18223b 100644
--- a/drivers/serial/bfin_5xx.c
+++ b/drivers/serial/bfin_5xx.c
@@ -1110,6 +1110,7 @@ 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;