Re: PATCH] serial: convert early_uart to earlycon for 8250

From: Yinghai Lu
Date: Mon May 28 2007 - 13:51:00 EST


On 5/28/07, Russell King <rmk+lkml@xxxxxxxxxxxxxxxx> wrote:
I can't comment on the arch specific bits. As a general note, I think
this is over complex. For instance, the additional hook in serial_core
to call the find_port_for_earlycon method isn't needed because you can
call serial8250_find_port_for_earlycon() from within
serial8250_console_setup(). You can also modify co->index from
within there without needing update_console_cmdline_console_index().

Good point, I will try to remove that hook.


Bjorn needs to review the 8250_early changes.

Apart from that, two other comments:

On Tue, May 22, 2007 at 12:31:59PM -0700, Yinghai Lu wrote:
> diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
> index c84dab0..e341fb9 100644
> --- a/drivers/serial/8250.c
> +++ b/drivers/serial/8250.c
> @@ -2402,6 +2405,7 @@ static void __init serial8250_isa_init_ports(void)
> for (i = 0, up = serial8250_ports;
> i < ARRAY_SIZE(old_serial_port) && i < nr_uarts;
> i++, up++) {
> + printk(KERN_INFO "serial8250_isa_init_ports 2 idx=%d\n",i);

Is this a debugging printk?

Oh.


> up->port.iobase = old_serial_port[i].port;
> up->port.irq = irq_canonicalize(old_serial_port[i].irq);
> up->port.uartclk = old_serial_port[i].baud_base * 16;
> @@ -2533,7 +2537,7 @@ static int __init serial8250_console_init(void)
> }
> console_initcall(serial8250_console_init);
>
> -static int __init find_port(struct uart_port *p)
> +int __init find_port_serial8250(struct uart_port *p)

If this is going to become globally visible, please name it
serial8250_find_port to match the style of the rest of the file.

I see.

YH
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