linux-kernel - Re: [PATCH v4 3/3] USB: serial: cp210x: Workaround cp2108 GET_LINE

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]

Date:	Sat, 31 Oct 2015 09:54:38 -0500
From:	Konstantin Shkolnyy <konstantin.shkolnyy@...il.com>
To:	Johan Hovold <johan@...nel.org>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 3/3] USB: serial: cp210x: Workaround cp2108
 GET_LINE_CTL bug

On Sat, Oct 31, 2015 at 7:16 AM, Johan Hovold <johan@...nel.org> wrote:
> [ Please avoid top-posting. ]
>
> On Thu, Oct 29, 2015 at 08:39:04AM -0500, Konstantin Shkolnyy wrote:
>> I tested it on cp2102, cp2105 and cp2108.
>> I'm a little worried about that extra PURGE command, so I did several
>> manual tests on each with a standard PC serial port on the other end
>> of the cable.
>> - run several open/write/close iteration (the test that used to break
>> cp2108), observe data on the other end;
>> - open minicom and see that cp210x can still receive data from the other end.
>
> Sounds good.
>
> If this turns out to cause any problems, we can always enable this based
> on chip type, right? I saw something about a vendor request for that in
> your (silabs') vendor driver.

Yes, there is a register with the chip type.

[...]
--
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/