diff options
Diffstat (limited to 'drivers/serial')
| -rw-r--r-- | drivers/serial/8250.c | 3 | ||||
| -rw-r--r-- | drivers/serial/atmel_serial.c | 17 | ||||
| -rw-r--r-- | drivers/serial/serial_core.c | 4 |
3 files changed, 22 insertions, 2 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index 1bc00b721e9d..be95e55b228b 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -2623,6 +2623,9 @@ static struct console serial8250_console = { static int __init serial8250_console_init(void) { + if (nr_uarts > UART_NR) + nr_uarts = UART_NR; + serial8250_isa_init_ports(); register_console(&serial8250_console); return 0; diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index 42be8b01a40f..6aeef22bd203 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -1439,14 +1439,29 @@ static struct uart_driver atmel_uart = { }; #ifdef CONFIG_PM +static bool atmel_serial_clk_will_stop(void) +{ +#ifdef CONFIG_ARCH_AT91 + return at91_suspend_entering_slow_clock(); +#else + return false; +#endif +} + static int atmel_serial_suspend(struct platform_device *pdev, pm_message_t state) { struct uart_port *port = platform_get_drvdata(pdev); struct atmel_uart_port *atmel_port = to_atmel_uart_port(port); + if (atmel_is_console_port(port) && console_suspend_enabled) { + /* Drain the TX shifter */ + while (!(UART_GET_CSR(port) & ATMEL_US_TXEMPTY)) + cpu_relax(); + } + if (device_may_wakeup(&pdev->dev) - && !at91_suspend_entering_slow_clock()) + && !atmel_serial_clk_will_stop()) enable_irq_wake(port->irq); else { uart_suspend_port(&atmel_uart, port); diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index c9b64e73c987..42d2e108b679 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -1991,7 +1991,9 @@ struct uart_match { static int serial_match_port(struct device *dev, void *data) { struct uart_match *match = data; - dev_t devt = MKDEV(match->driver->major, match->driver->minor) + match->port->line; + struct tty_driver *tty_drv = match->driver->tty_driver; + dev_t devt = MKDEV(tty_drv->major, tty_drv->minor_start) + + match->port->line; return dev->devt == devt; /* Actually, only one tty per port */ } |