diff options
| -rw-r--r-- | drivers/serial/serial_core.c | 8 | ||||
| -rw-r--r-- | include/linux/serial_core.h | 1 |
2 files changed, 7 insertions, 2 deletions
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index 2835e29298e..76418c139ff 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -1986,7 +1986,8 @@ int uart_suspend_port(struct uart_driver *drv, struct uart_port *uport) tty_dev = device_find_child(uport->dev, &match, serial_match_port); if (device_may_wakeup(tty_dev)) { - enable_irq_wake(uport->irq); + if (!enable_irq_wake(uport->irq)) + uport->irq_wake = 1; put_device(tty_dev); mutex_unlock(&port->mutex); return 0; @@ -2052,7 +2053,10 @@ int uart_resume_port(struct uart_driver *drv, struct uart_port *uport) tty_dev = device_find_child(uport->dev, &match, serial_match_port); if (!uport->suspended && device_may_wakeup(tty_dev)) { - disable_irq_wake(uport->irq); + if (uport->irq_wake) { + disable_irq_wake(uport->irq); + uport->irq_wake = 0; + } mutex_unlock(&port->mutex); return 0; } diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 7a6daf18999..a23fa29d4eb 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -365,6 +365,7 @@ struct uart_port { struct device *dev; /* parent device */ unsigned char hub6; /* this should be in the 8250 driver */ unsigned char suspended; + unsigned char irq_wake; unsigned char unused[2]; void *private_data; /* generic platform data pointer */ }; |