Re: handling flow control for console device

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On Wed, Apr 21, 2010 at 12:38 AM, Kittlitz, Edward (Ned)
<ned.kittlitz@xxxxxxxxxxxxxxxxxx> wrote:
> Hello,
>
> I've been trying to figure out the Linux philosophy on
> flow control for console devices.
>
> We have several situations where flow control
> can stop bootup or normal operation.  For us, it's more
> important that things keep running; console output has
> lower priority.
>
> I thought there would be some way to forcibly disable
> flow control for the console. But I can not find any way
> to do it.  In my case, it's XOFF flow control.
>

During boot up most of tty drivers will be using tty_std_termios settings
when we do an uart_register_driver, init_termios will be set to tty_std_termios.

And looking into tty_std_termios we have

 .c_iflag = ICRNL | IXON,

here IXON is enabled by default.

tty_std_termios ---> "drivers/char/tty_io.c"

---
Regards,
Govindraj.R
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