diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/tty/serial/serial_core.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 984605bb5bf1..2c67a077042a 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -2008,23 +2008,24 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport) } put_device(tty_dev); - if (console_suspend_enabled || !uart_console(uport)) - uport->suspended = 1; + /* Nothing to do if the console is not suspending */ + if (!console_suspend_enabled && uart_console(uport)) + goto unlock; + + uport->suspended = 1; if (port->flags & ASYNC_INITIALIZED) { const struct uart_ops *ops = uport->ops; int tries; - if (console_suspend_enabled || !uart_console(uport)) { - set_bit(ASYNCB_SUSPENDED, &port->flags); - clear_bit(ASYNCB_INITIALIZED, &port->flags); - - spin_lock_irq(&uport->lock); - ops->stop_tx(uport); - ops->set_mctrl(uport, 0); - ops->stop_rx(uport); - spin_unlock_irq(&uport->lock); - } + set_bit(ASYNCB_SUSPENDED, &port->flags); + clear_bit(ASYNCB_INITIALIZED, &port->flags); + + spin_lock_irq(&uport->lock); + ops->stop_tx(uport); + ops->set_mctrl(uport, 0); + ops->stop_rx(uport); + spin_unlock_irq(&uport->lock); /* * Wait for the transmitter to empty. @@ -2036,19 +2037,17 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport) drv->dev_name, drv->tty_driver->name_base + uport->line); - if (console_suspend_enabled || !uart_console(uport)) - ops->shutdown(uport); + ops->shutdown(uport); } /* * Disable the console device before suspending. */ - if (console_suspend_enabled && uart_console(uport)) + if (uart_console(uport)) console_stop(uport->cons); - if (console_suspend_enabled || !uart_console(uport)) - uart_change_pm(state, UART_PM_STATE_OFF); - + uart_change_pm(state, UART_PM_STATE_OFF); +unlock: mutex_unlock(&port->mutex); return 0; |