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serial: 8250: Initialize fixed type fields when setting defaults 

Prepare for 8250 split; move fixed type initialization into
serial8250_set_defaults(). This enables uart_config[] array to remain
file scope in base port operations after the split.

NB: the call to serial8250_init_fixed_type_port() from
serial8250_register_ports() was added by commit b5d228cc4f
("serial: copy UART properties of UPF_FIXED_TYPE ports provisioned
using early_serial_setup") specifically to support ports initialized
by early_serial_setup(). Since serial8250_set_defaults() is called
from early_serial_setup(), fixed type initialization is now already
handled there before serial8250_register_ports() is called.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Hurley 2015-02-24 14:25:10 -05:00 committed by Greg Kroah-Hartman
parent 1a53e07989
commit afd483bd0f
1 changed files with 12 additions and 16 deletions
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28
drivers/tty/serial/8250/8250_core.c
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@ -3148,6 +3148,17 @@ static void serial8250_set_defaults(struct uart_8250_port *up)
{
struct uart_port *port = &up->port;
if (up->port.flags & UPF_FIXED_TYPE) {
unsigned int type = up->port.type;
if (!up->port.fifosize)
up->port.fifosize = uart_config[type].fifo_size;
if (!up->tx_loadsz)
up->tx_loadsz = uart_config[type].tx_loadsz;
if (!up->capabilities)
up->capabilities = uart_config[type].flags;
}
set_io_from_upio(port);
}
@ -3208,18 +3219,6 @@ static void __init serial8250_isa_init_ports(void)
}
}
static void
serial8250_init_fixed_type_port(struct uart_8250_port *up, unsigned int type)
{
up->port.type = type;
if (!up->port.fifosize)
up->port.fifosize = uart_config[type].fifo_size;
if (!up->tx_loadsz)
up->tx_loadsz = uart_config[type].tx_loadsz;
if (!up->capabilities)
up->capabilities = uart_config[type].flags;
}
static void __init
serial8250_register_ports(struct uart_driver *drv, struct device *dev)
{
@ -3236,9 +3235,6 @@ serial8250_register_ports(struct uart_driver *drv, struct device *dev)
if (skip_txen_test)
up->port.flags |= UPF_NO_TXEN_TEST;
if (up->port.flags & UPF_FIXED_TYPE)
serial8250_init_fixed_type_port(up, up->port.type);
uart_add_one_port(drv, &up->port);
}
}
@ -3757,7 +3753,7 @@ int serial8250_register_8250_port(struct uart_8250_port *up)
uart->port.flags |= UPF_NO_TXEN_TEST;
if (up->port.flags & UPF_FIXED_TYPE)
serial8250_init_fixed_type_port(uart, up->port.type);
uart->port.type = up->port.type;
serial8250_set_defaults(uart);