[SERIAL] Make port->ops constant

No one should write to the port->ops structure, so make it constant.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c
index 9437704..74142b7 100644 (file)
--- a/drivers/serial/serial_core.c
+++ b/drivers/serial/serial_core.c
@@ -1870,7 +1870,7 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)
        mutex_lock(&state->mutex);
 
        if (state->info && state->info->flags & UIF_INITIALIZED) {
-               struct uart_ops *ops = port->ops;
+               const struct uart_ops *ops = port->ops;
 
                spin_lock_irq(&port->lock);
                ops->stop_tx(port);
@@ -1932,7 +1932,7 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *port)
        }
 
        if (state->info && state->info->flags & UIF_INITIALIZED) {
-               struct uart_ops *ops = port->ops;
+               const struct uart_ops *ops = port->ops;
                int ret;
 
                ops->set_mctrl(port, 0);

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index f3af477..b74ff34 100644 (file)
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -257,7 +257,7 @@ struct uart_port {
        unsigned int            mctrl;                  /* current modem ctrl settings */
        unsigned int            timeout;                /* character-based timeout */
        unsigned int            type;                   /* port type */
-       struct uart_ops         *ops;
+       const struct uart_ops   *ops;
        unsigned int            custom_divisor;
        unsigned int            line;                   /* port index */
        unsigned long           mapbase;                /* for ioremap */