From: Rogier Wolff <R.E.Wolff@BitWizard.nl>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Linux tty layer hackery: Heads up and RFC
Date: Fri, 22 Jul 2005 16:57:16 +0200 [thread overview]
Message-ID: <20050722145716.GA3332@bitwizard.nl> (raw)
In-Reply-To: <1121967993.19424.18.camel@localhost.localdomain>
On Thu, Jul 21, 2005 at 06:46:32PM +0100, Alan Cox wrote:
> int tty_prepare_flip_string(tty, strptr, len)
>
> Adjust the buffer to allow len characters to be added. Returns a buffer
> pointer in strptr and the length available. This allows for hardware
> that needs to use functions like insl or mencpy_fromio.
Ok, So then I start copying characters into the flipstring, but how do
I say I'm done?
Or is there a race between that I call tty_prepare_flip_string, and
other processes start pulling my not-yet-filled string from the
buffer? (Surely not!)
Roger.
--
** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2600998 **
*-- BitWizard writes Linux device drivers for any device you may have! --*
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next prev parent reply other threads:[~2005-07-22 14:57 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-21 17:46 Linux tty layer hackery: Heads up and RFC Alan Cox
2005-07-21 17:47 ` Sergei Organov
2005-07-22 14:57 ` Rogier Wolff [this message]
2005-07-22 16:16 ` Alan Cox
2005-07-26 9:55 ` Mark Underwood
2005-07-26 11:11 ` Alan Cox
2005-07-26 12:38 ` Mark Underwood
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