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[PATCH] Serial: Fix console port spinlock initialisation 

Initialise the spinlock for port being used by the console early, but
don't re-initialise it again later.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Russell King 2005-07-03 21:05:45 +01:00 committed by Russell King
parent 1d6bebf2ec
commit 976ecd12b8
1 changed files with 13 additions and 1 deletions
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14
drivers/serial/serial_core.c
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@ -1808,6 +1808,12 @@ uart_set_options(struct uart_port *port, struct console *co,
struct termios termios;
int i;
/*
* Ensure that the serial console lock is initialised
* early.
*/
spin_lock_init(&port->lock);
memset(&termios, 0, sizeof(struct termios));
termios.c_cflag = CREAD | HUPCL | CLOCAL;
@ -2196,10 +2202,16 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *port)
state->port = port;
spin_lock_init(&port->lock);
port->cons = drv->cons;
port->info = state->info;
/*
* If this port is a console, then the spinlock is already
* initialised.
*/
if (!uart_console(port))
spin_lock_init(&port->lock);
uart_configure_port(drv, state, port);
/*