tty: Replace ASYNC_SUSPENDED bit and update atomically
Replace ASYNC_SUSPENDED bit in the tty_port::flags field with
TTY_PORT_SUSPENDED bit in the tty_port::iflags field. Introduce helpers
tty_port_set_suspended() and tty_port_suspended() to abstract
atomic bit ops.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 2471380..9336067 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -249,7 +249,7 @@
* a DCD drop (hangup) at just the right time. Clear suspended bit so
* we don't try to resume a port that has been shutdown.
*/
- clear_bit(ASYNCB_SUSPENDED, &port->flags);
+ tty_port_set_suspended(port, 0);
/*
* Free the transmit buffer page.
@@ -2007,7 +2007,7 @@
const struct uart_ops *ops = uport->ops;
int tries;
- set_bit(ASYNCB_SUSPENDED, &port->flags);
+ tty_port_set_suspended(port, 1);
clear_bit(ASYNCB_INITIALIZED, &port->flags);
spin_lock_irq(&uport->lock);
@@ -2088,7 +2088,7 @@
console_start(uport->cons);
}
- if (port->flags & ASYNC_SUSPENDED) {
+ if (tty_port_suspended(port)) {
const struct uart_ops *ops = uport->ops;
int ret;
@@ -2118,7 +2118,7 @@
}
}
- clear_bit(ASYNCB_SUSPENDED, &port->flags);
+ tty_port_set_suspended(port, 0);
}
mutex_unlock(&port->mutex);
