From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jan Kasprzak <kas@fi.muni.cz>
Cc: jirislaby@gmail.com, linux-kernel@vger.kernel.org
Subject: Re: MOXA I/O errors on 2.6.28+
Date: Sat, 14 Mar 2009 21:42:30 +0000 [thread overview]
Message-ID: <20090314214230.352d293e@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <20090314213630.GA3375@fi.muni.cz>
On Sat, 14 Mar 2009 22:36:30 +0100
Jan Kasprzak <kas@fi.muni.cz> wrote:
> Hello,
>
> I have several servers with MOXA C320 serial boards. Starting with 2.6.28,
> some ports on MOXA boards sometimes get to a state where open("/dev/ttyMX<n>")
> returns -EIO. I use the servers with MOXA boards as serial console hubs,
> and I think the EIO state is caused by the remote getty or the whole remote
> server being restarted.
Sounds like a refcount bug.
> 2.6.27 is OK, 2.6.28 and 2.6.29-rc8 is faulty. I can git bisect
> if you want (I have a spare server which I can reboot at will).
Might be useful but let me take a look first, chances are you've provided
enough information
>
> My MOXA boards are
>
> 01:08.0 Serial controller: Moxa Technologies Co Ltd Intellio C320 Turbo PCI (rev 02)
>
> What can I do to have this problem fixed? Thanks,
Step 1: Report it giving accurate detailed info... which you've done
nicely.
Alan
next prev parent reply other threads:[~2009-03-14 21:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-14 21:36 Jan Kasprzak
2009-03-14 21:42 ` Alan Cox [this message]
2009-03-14 22:41 ` Jan Kasprzak
2009-03-15 9:31 ` Jiri Slaby
2009-03-15 9:36 ` [PATCH 1/1] Char: moxa, fix refcounting in moxa_poll_port Jiri Slaby
[not found] ` <20090315105530.6f1782be@lxorguk.ukuu.org.uk>
2009-03-15 11:52 ` Jiri Slaby
2009-03-15 9:37 ` Jiri Slaby
2009-03-15 15:25 ` Jan Yenya Kasprzak
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