From: Devin Heitmueller <dheitmueller@kernellabs.com>
To: "Radek Mašín" <radek@masin.eu>
Cc: linux-media@vger.kernel.org
Subject: Re: CX25821 driver in kernel 3.4.4 problem
Date: Mon, 23 Jul 2012 08:20:21 -0400 [thread overview]
Message-ID: <CAGoCfixPZjbdG8kKEuWoVHatJ8wO7rQjzzDK+cP8F6KM9Ta0jw@mail.gmail.com> (raw)
In-Reply-To: <1343029203238273500@masin.eu>
On Mon, Jul 23, 2012 at 3:40 AM, Radek Mašín <radek@masin.eu> wrote:
> Hello,
> may be one more problem. I use Zoneminder software for capturing pictures from card and occasionally
> I get corrupted picture. Please take a look for attached files.
Looks like the IRQ handler wasn't servicing fast enough, causing parts
of a frame to get dropped. Does this only happen when you have a
bunch of streams running in parallel?
This sort of performance issue would be very difficult to debug
without one of the developers having a board. From what I understand
the code provided by Conexant was merged essentially as-is (with some
codingstyle cleanups and zero testing), with no upstream developers
actually having the hardware.
You're probably out of luck unless you're willing to pay somebody to
get a board and debug the problem.
Devin
--
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com
next prev parent reply other threads:[~2012-07-23 12:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-23 7:40 CX25821 driver in kernel 3.4.4 problem Radek Mašín
2012-07-23 12:20 ` Devin Heitmueller [this message]
2012-07-23 13:36 ` Radek Mašín
-- strict thread matches above, loose matches on Subject: below --
2012-07-18 12:52 Radek Mašín
2012-07-18 13:14 ` Ezequiel Garcia
2012-07-18 13:24 ` Ezequiel Garcia
2012-07-18 14:38 ` Radek Mašín
2012-07-18 17:03 ` Ezequiel Garcia
2012-07-18 13:45 ` Radek Mašín
2012-07-18 13:47 ` Ezequiel Garcia
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