diff options
| -rw-r--r-- | drivers/tty/serial/8250/8250.c | 91 | ||||
| -rw-r--r-- | include/linux/serial_8250.h | 1 |
2 files changed, 60 insertions, 32 deletions
diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c index 662188d6cddf..47d061b9ad4d 100644 --- a/drivers/tty/serial/8250/8250.c +++ b/drivers/tty/serial/8250/8250.c @@ -3112,7 +3112,7 @@ static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port * } /** - * serial8250_register_port - register a serial port + * serial8250_register_8250_port - register a serial port * @port: serial port template * * Configure the serial port specified by the request. If the @@ -3124,52 +3124,56 @@ static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port * * * On success the port is ready to use and the line number is returned. */ -int serial8250_register_port(struct uart_port *port) +int serial8250_register_8250_port(struct uart_8250_port *up) { struct uart_8250_port *uart; int ret = -ENOSPC; - if (port->uartclk == 0) + if (up->port.uartclk == 0) return -EINVAL; mutex_lock(&serial_mutex); - uart = serial8250_find_match_or_unused(port); + uart = serial8250_find_match_or_unused(&up->port); if (uart) { uart_remove_one_port(&serial8250_reg, &uart->port); - uart->port.iobase = port->iobase; - uart->port.membase = port->membase; - uart->port.irq = port->irq; - uart->port.irqflags = port->irqflags; - uart->port.uartclk = port->uartclk; - uart->port.fifosize = port->fifosize; - uart->port.regshift = port->regshift; - uart->port.iotype = port->iotype; - uart->port.flags = port->flags | UPF_BOOT_AUTOCONF; - uart->port.mapbase = port->mapbase; - uart->port.private_data = port->private_data; - if (port->dev) - uart->port.dev = port->dev; - - if (port->flags & UPF_FIXED_TYPE) - serial8250_init_fixed_type_port(uart, port->type); + uart->port.iobase = up->port.iobase; + uart->port.membase = up->port.membase; + uart->port.irq = up->port.irq; + uart->port.irqflags = up->port.irqflags; + uart->port.uartclk = up->port.uartclk; + uart->port.fifosize = up->port.fifosize; + uart->port.regshift = up->port.regshift; + uart->port.iotype = up->port.iotype; + uart->port.flags = up->port.flags | UPF_BOOT_AUTOCONF; + uart->port.mapbase = up->port.mapbase; + uart->port.private_data = up->port.private_data; + if (up->port.dev) + uart->port.dev = up->port.dev; + + if (up->port.flags & UPF_FIXED_TYPE) + serial8250_init_fixed_type_port(uart, up->port.type); set_io_from_upio(&uart->port); /* Possibly override default I/O functions. */ - if (port->serial_in) - uart->port.serial_in = port->serial_in; - if (port->serial_out) - uart->port.serial_out = port->serial_out; - if (port->handle_irq) - uart->port.handle_irq = port->handle_irq; + if (up->port.serial_in) + uart->port.serial_in = up->port.serial_in; + if (up->port.serial_out) + uart->port.serial_out = up->port.serial_out; + if (up->port.handle_irq) + uart->port.handle_irq = up->port.handle_irq; /* Possibly override set_termios call */ - if (port->set_termios) - uart->port.set_termios = port->set_termios; - if (port->pm) - uart->port.pm = port->pm; - if (port->handle_break) - uart->port.handle_break = port->handle_break; + if (up->port.set_termios) + uart->port.set_termios = up->port.set_termios; + if (up->port.pm) + uart->port.pm = up->port.pm; + if (up->port.handle_break) + uart->port.handle_break = up->port.handle_break; + if (up->dl_read) + uart->dl_read = up->dl_read; + if (up->dl_write) + uart->dl_write = up->dl_write; if (serial8250_isa_config != NULL) serial8250_isa_config(0, &uart->port, @@ -3183,6 +3187,29 @@ int serial8250_register_port(struct uart_port *port) return ret; } +EXPORT_SYMBOL(serial8250_register_8250_port); + +/** + * serial8250_register_port - register a serial port + * @port: serial port template + * + * Configure the serial port specified by the request. If the + * port exists and is in use, it is hung up and unregistered + * first. + * + * The port is then probed and if necessary the IRQ is autodetected + * If this fails an error is returned. + * + * On success the port is ready to use and the line number is returned. + */ +int serial8250_register_port(struct uart_port *port) +{ + struct uart_8250_port up; + + memset(&up, 0, sizeof(up)); + memcpy(&up.port, port, sizeof(*port)); + return serial8250_register_8250_port(&up); +} EXPORT_SYMBOL(serial8250_register_port); /** diff --git a/include/linux/serial_8250.h b/include/linux/serial_8250.h index a522fd977aad..10dbce5205af 100644 --- a/include/linux/serial_8250.h +++ b/include/linux/serial_8250.h @@ -69,6 +69,7 @@ enum { struct uart_port; struct uart_8250_port; +int serial8250_register_8250_port(struct uart_8250_port *); int serial8250_register_port(struct uart_port *); void serial8250_unregister_port(int line); void serial8250_suspend_port(int line); |