Revert "serial: 8250: Let serial core initialise spin lock"

This reverts commit 679193b7baf8d88e41cbeb397ca17f797654947d.

It appears that in QEmu the lock has been initialised differently
(it wasn't obvious on real hardware during testing). Let's
revert the change until the better approach will be developed.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200802111612.36189-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c
index b2d18189d3d972fddee35e6a088831544d9e6255..09475695effd472dd027922b5642d189a23921ec 100644 (file)
--- a/drivers/tty/serial/8250/8250_port.c
+++ b/drivers/tty/serial/8250/8250_port.c
@@ -3194,6 +3194,7 @@ void serial8250_init_port(struct uart_8250_port *up)
 {
        struct uart_port *port = &up->port;
 
+       spin_lock_init(&port->lock);
        port->ops = &serial8250_pops;
        port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_8250_CONSOLE);