Re: Serial driver hangs

From: Alan Cox (alan_at_lxorguk.ukuu.org.uk)
Date: 09/29/04

  • Next message: Alan Cox: "Re: processor affinity" 
    To: Paul Fulghum <paulkf@microgate.com>
Date:	Tue, 28 Sep 2004 23:12:44 +0100

    On Mer, 2004-09-29 at 00:03, Paul Fulghum wrote:
    > The alternative is to implement a flow control
    > mechanism between the flip buffer layer and
    > the tty drivers to (at the very least)
    > enable/disable receive interrupts.

    We have throttle()/unthrottle(). Drivers also know if they can't
    push data.

    > Since the flip buffer implementation is probably
    > going to need rework anyways (eventually) along
    > with the other tty locking issues, this may not
    > be a trivial task.

    TTY_DONT_FLIP has to die. It's already broken for many cases.
    Its basically a nasty quickfix someone did ages ago

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