From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
To: Arnd Bergmann <arnd@arndb.de>
Cc: Karsten Keil <isdn@linux-pingi.de>,
'Peter Hurley' <peter@hurleysoftware.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
David Laight <David.Laight@aculab.com>,
"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>,
"linuxppc-dev@lists.ozlabs.org" <linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH tty-next 14/22] tty: Remove tty_wait_until_sent_from_close()
Date: Tue, 17 Jun 2014 12:54:41 +0100 [thread overview]
Message-ID: <20140617125441.67cd5ef4@alan.etchedpixels.co.uk> (raw)
In-Reply-To: <8191805.dfI4LbYmWz@wuerfel>
> Before the patch, I believe tty_reopen() would return -EIO because
> the TTY_CLOSING flag is set. After the patch, tty_open() blocks
> on tty_lock() before calling tty_reopen(). AFAICT, this is independent
> of O_NONBLOCK.
That would be a bug then. Returning -EIO is fine (if unfriendly). The
O_NONBLOCK can't block in this case though because the port could take a
long time to give up trying to dribble its bits (up to 30 seconds or so)
Alan
next prev parent reply other threads:[~2014-06-17 12:07 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1402924639-5164-1-git-send-email-peter@hurleysoftware.com>
2014-06-16 13:17 ` [PATCH tty-next 14/22] tty: Remove tty_wait_until_sent_from_close() Peter Hurley
2014-06-17 8:00 ` Arnd Bergmann
2014-06-17 8:18 ` David Laight
2014-06-17 10:57 ` Peter Hurley
2014-06-17 11:03 ` David Laight
2014-06-17 11:31 ` Arnd Bergmann
2014-06-17 11:54 ` One Thousand Gnomes [this message]
2014-06-17 11:32 ` Peter Hurley
2014-07-09 13:57 ` Peter Hurley
2014-10-08 3:56 ` Peter Hurley
2014-10-10 8:58 ` One Thousand Gnomes
2014-07-10 23:09 ` Greg Kroah-Hartman
2014-07-11 15:03 ` Peter Hurley
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