linux-kernel - Re: [PATCH] USB: serial: add FTDI FT4232H ID

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: <20090407090353.GA12669@pengutronix.de>
Date:	Tue, 7 Apr 2009 11:03:53 +0200
From:	Luotao Fu <l.fu@...gutronix.de>
To:	Uwe Bonnes <bon@...ktron.ikp.physik.tu-darmstadt.de>
Cc:	Luotao Fu <l.fu@...gutronix.de>, gregkh@...e.de,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] USB: serial: add FTDI FT4232H ID

On Tue, Apr 07, 2009 at 10:30:52AM +0200, Uwe Bonnes wrote:
> >>>>> "Luotao" == Luotao Fu <l.fu@...gutronix.de> writes:
> 
>     Luotao> add the ID of FT4232H Hi-Speed quad channel serial converter.
> 
> This probably isn't enough to make the devices work.
> 
> The FT2232H and FT4432H are High Speed devices with defaul buffer sizes of
> 512 bytes. A recieve buffer contains two status bytes and then up to 510
> bytes of data against 62 bytes on the old devices.

Shame on me. I did only check whether the device with its four channels are
registered. Since the chip is built-in on our board and I still need some
additional libraries to check the devices connected to it. I haven't done any
function tests still. Will keep an eye on this. Sounds that it could be a little
hairy then. Afais the PID 6001 is e.g. shared by common/high speed devices. I
didn't grab deeper in the ftdi code, probably it'll be some way to work around
this.

cheers
Luotao Fu
-- 
Pengutronix e.K.                           | Dipl.-Ing. Luotao Fu        |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

Download attachment "signature.asc" of type "application/pgp-signature" (198 bytes)