serial console broken in 2.4.4?

serial console broken in 2.4.4?

[Konstantin Boldyshev]

Hello,

I have noticed strange serial console behaviour in 2.4.4.
I have system with gettys on ttyS0 and tty1.
When I boot with usual console (set to tty1), getty on ttyS0 works.
When I boot with console set to ttyS0 ("console=ttyS0,9600n8"),
getty on ttyS0 doesnot respond on input (although ps shows it running);
all kernel messages are showed on ttyS0, but it seems that _input_ is
disallowed/broken. Things were okay somewhere around (AFAIR) 2.4.0pre..
Is this a known 2.4 bug? Any patch to fix this?

-- 
Regards,
Konstantin

Re: serial console broken in 2.4.4?

[Reto Baettig]

This is not a real patch but it works fine for me:

--- drivers/char/serial.c.orig  Thu May  3 09:29:00 2001
+++ drivers/char/serial.c       Thu May  3 09:29:34 2001
@@ -1764,8 +1764,8 @@
        /*
         * !!! ignore all characters if CREAD is not set
         */
-       if ((cflag & CREAD) == 0)
-               info->ignore_status_mask |= UART_LSR_DR;
+//     if ((cflag & CREAD) == 0)
+//             info->ignore_status_mask |= UART_LSR_DR;
        save_flags(flags); cli();
        if (uart_config[info->state->type].flags & UART_STARTECH) {
                serial_outp(info, UART_LCR, 0xBF);

This stuff got changed between 2.4.3 and 2.4.4 but I don't know why and
it broke my serial console. Please let me know when you know the "real"
fix for this problem.

	Reto

Konstantin Boldyshev wrote:
> 
> Hello,
> 
> I have noticed strange serial console behaviour in 2.4.4.
> I have system with gettys on ttyS0 and tty1.
> When I boot with usual console (set to tty1), getty on ttyS0 works.
> When I boot with console set to ttyS0 ("console=ttyS0,9600n8"),
> getty on ttyS0 doesnot respond on input (although ps shows it running);
> all kernel messages are showed on ttyS0, but it seems that _input_ is
> disallowed/broken. Things were okay somewhere around (AFAIR) 2.4.0pre..
> Is this a known 2.4 bug? Any patch to fix this?
> 
> --
> Regards,
> Konstantin
> 
> -
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