From: Paul Mackerras <paulus@samba.org>
To: Andy Gay <andy@andynet.net>
Cc: Andrew Morton <akpm@osdl.org>,
bugme-daemon@bugzilla.kernel.org, netdev@vger.kernel.org,
xeb@mail.ru
Subject: Re: [Bugme-new] [Bug 6530] New: MAINLINE
Date: Fri, 12 May 2006 11:59:10 +1000 [thread overview]
Message-ID: <17507.60398.845863.783477@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <1147326683.29448.80.camel@tahini.andynet.net>
Andy Gay writes:
> How does the serial driver know it has to call ppp_asynctty_wakeup()?
The serial driver is supposed to call the line discipline's wakeup
function when it has room in the output buffer and the
TTY_DO_WRITE_WAKEUP bit is set in tty->flags. When the serial port is
set to the ppp line discipline, then it uses the functions defined in
the ppp_ldisc structure in drivers/net/ppp_async.c, and the
write_wakeup field in that structure points to ppp_asynctty_wakeup.
> There were a bunch of changes to the serial drivers between 2.6.15 and
> 2.6.16, maybe that's where this problem was introduced. Do we know which
> serial driver is involved in the original report?
Apparently it's the pty driver.
Paul.
next prev parent reply other threads:[~2006-05-12 1:59 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200605100920.k4A9KC91018259@fire-2.osdl.org>
2006-05-10 9:33 ` [Bugme-new] [Bug 6530] New: MAINLINE Andrew Morton
2006-05-10 10:27 ` Paul Mackerras
2006-05-11 3:29 ` Andrew Morton
2006-05-11 4:01 ` Paul Mackerras
2006-05-11 4:06 ` Andrew Morton
2006-05-11 5:51 ` Andy Gay
2006-05-11 5:56 ` Andrew Morton
2006-05-13 5:27 ` Paul Mackerras
2006-05-12 1:59 ` Paul Mackerras [this message]
2006-05-12 2:12 ` Andy Gay
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