From: Greg KH <gregkh@linuxfoundation.org>
To: Jiri Slaby <jslaby@suse.cz>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
alan@linux.intel.com, linux-kernel@vger.kernel.org,
jirislaby@gmail.com
Subject: Re: [PATCH 24/24] TTY: use tty_port_register_device
Date: Sat, 9 Jun 2012 10:27:23 -0700 [thread overview]
Message-ID: <20120609172723.GB6244@kroah.com> (raw)
In-Reply-To: <4FD364A3.9090104@suse.cz>
On Sat, Jun 09, 2012 at 04:58:43PM +0200, Jiri Slaby wrote:
> On 06/04/2012 07:00 PM, Alan Cox wrote:
> >> In this patch we modify most of the drivers to do the latter. When the
> >> drivers use tty_register_device and we have tty_port already, we
> >> switch to tty_port_register_device. So we have the tty_struct =>
> >> tty_port link for free for those.
> >
> > Nice solution
>
> Seems so on the first glance... But it is racy. There is a window since
> tty_register_driver to tty_(port_)register_device where a node may be
> opened already, but tty_port won't be set up yet.
>
> The fix is to move cdev_add from tty_register_driver to
> tty_register_device, which makes sense anyway. Any objections?
>
> For the time being, Greg, please ignore 24/24 from these series (I see
> you haven't applied any of the patches yet.)
Ok, I'll drop 24/24. I should get to these this upcoming week as I am
finally going to be home from all of my crazy traveling.
greg k-h
prev parent reply other threads:[~2012-06-09 17:28 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-04 11:35 [PATCH 00/25] TTY buffer in tty_port -- prep no. 3 Jiri Slaby
2012-06-04 11:35 ` [PATCH 01/24] TTY: cyclades, add local pointer for card Jiri Slaby
2012-06-04 11:35 ` [PATCH 02/24] TTY: ircomm, add tty_port Jiri Slaby
2012-06-04 11:35 ` [PATCH 03/24] TTY: ircomm, use close times from tty_port Jiri Slaby
2012-06-04 11:35 ` [PATCH 04/24] TTY: ircomm, use open counts " Jiri Slaby
2012-06-04 16:36 ` Alan Cox
2012-06-04 11:35 ` [PATCH 05/24] TTY: ircomm, use flags " Jiri Slaby
2012-06-04 11:35 ` [PATCH 06/24] TTY: ircomm, revamp locking Jiri Slaby
2012-06-04 16:57 ` Alan Cox
2012-06-04 11:35 ` [PATCH 07/24] TTY: ircomm, use tty from tty_port Jiri Slaby
2012-06-04 11:35 ` [PATCH 08/24] TTY: ircomm, define local tty_port Jiri Slaby
2012-06-04 11:35 ` [PATCH 09/24] TTY: ircomm, define carrier routines Jiri Slaby
2012-06-04 11:35 ` [PATCH 10/24] TTY: ircomm, use tty_port_close_end helper Jiri Slaby
2012-06-04 11:35 ` [PATCH 11/24] TTY: ircomm, use tty_port_close_start helper Jiri Slaby
2012-06-04 11:35 ` [PATCH 12/24] TTY: um/line, add tty_port Jiri Slaby
2012-06-04 11:35 ` [PATCH 13/24] TTY: um/line, use tty from tty_port Jiri Slaby
2012-06-04 12:01 ` Richard Weinberger
2012-06-04 15:20 ` Jiri Slaby
2012-06-04 15:29 ` Richard Weinberger
2012-06-04 15:41 ` Jiri Slaby
2012-06-04 15:42 ` Richard Weinberger
2012-06-04 16:27 ` [uml-devel] " Boaz Harrosh
2012-06-04 16:29 ` Richard Weinberger
2012-06-04 16:37 ` Boaz Harrosh
2012-06-04 16:55 ` Boaz Harrosh
2012-06-04 17:05 ` Richard Weinberger
2012-06-04 17:14 ` Boaz Harrosh
2012-06-04 15:58 ` Alan Cox
2012-06-04 11:35 ` [PATCH 14/24] PTY: remove one empty ops->remove Jiri Slaby
2012-06-04 11:35 ` [PATCH 15/24] PTY: merge pty_install implementations Jiri Slaby
2012-06-04 11:35 ` [PATCH 16/24] PTY: add tty_port Jiri Slaby
2012-06-12 22:55 ` Greg KH
2012-06-14 0:29 ` Greg KH
2012-06-14 0:31 ` Greg KH
2012-06-04 11:35 ` [PATCH 17/24] TTY: vt, remove con_schedule_flip Jiri Slaby
2012-06-04 11:35 ` [PATCH 18/24] TTY: provide drivers with tty_port_install Jiri Slaby
2012-06-04 11:35 ` [PATCH 19/24] TTY: vt, add ->install Jiri Slaby
2012-06-04 11:35 ` [PATCH 20/24] TTY: usb-serial, use tty_port_install Jiri Slaby
2012-06-04 11:35 ` [PATCH 21/24] TTY: centralize fail paths in tty_register_driver Jiri Slaby
2012-06-04 11:35 ` [PATCH 22/24] TTY: add ports array to tty_driver Jiri Slaby
2012-06-04 11:35 ` [PATCH 23/24] TTY: add tty_port_register_device helper Jiri Slaby
2012-06-04 11:35 ` [PATCH 24/24] TTY: use tty_port_register_device Jiri Slaby
2012-06-04 17:00 ` Alan Cox
2012-06-09 14:58 ` Jiri Slaby
2012-06-09 17:27 ` Greg KH [this message]
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