linux-kernel - Re: [PATCH v2 1/6] TTY: serial, remove BTM from wait_until

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20110719003503.GA4138@amos.fritz.box>
Date:	Tue, 19 Jul 2011 02:35:04 +0200
From:	Andreas Bombe <aeb@...ian.org>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	gregkh@...e.de, jirislaby@...il.com, linux-serial@...r.kernel.org,
	linux-kernel@...r.kernel.org, Alan Cox <alan@...ux.intel.com>,
	Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH v2 1/6] TTY: serial, remove BTM from wait_until_sent

On Thu, Jul 14, 2011 at 02:35:10PM +0200, Jiri Slaby wrote:
> This should also fix the issue Andreas is seeing (BTM in comparison to
> BKL doesn't have any hidden functionality like unlocking during
> sleeping).

I tested the patch series and it does not appear to make a difference
for the internal (16550A) serial ports on my system. Also, I am still
unclear on why it freezes the X display during the timeout period.

The other serial port device I have at hand is a FTDI USB->Dual UART
which appears to not have a timeout at all, but then that shows no
difference whether your patches are applied or not. I don't remember if
it was always that way, at least 2.6.39 also acts identically.

-- 
Andreas Bombe
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/