From: Jean-Francois Moine <moinejf@free.fr>
To: "Németh Márton" <nm127@freemail.hu>
Cc: V4L Mailing List <linux-media@vger.kernel.org>
Subject: Re: gspca - pac7302: Add a delay on loading the bridge registers.
Date: Sat, 9 Jan 2010 13:36:02 +0100 [thread overview]
Message-ID: <20100109133602.01c34ce9@tele> (raw)
In-Reply-To: <4B476B5E.7040909@freemail.hu>
On Fri, 08 Jan 2010 18:29:02 +0100
Németh Márton <nm127@freemail.hu> wrote:
> > Without the delay, the usb_control_msg() may fail when loading the
> > page 3 with error -71 or -62.
> >
> > Priority: normal
> >
> > Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
>
> include/asm-generic/errno.h:
> > #define ETIME 62 /* Timer expired */
> > #define EPROTO 71 /* Protocol error */
>
> I'm interested in which device have you used for testing this?
Hi,
These errors occured with the webcam 06f8:3009, but I do not know
exactly how. I thought about a speed problem. May be, when the webcam
cannot treat quickly enough the requests, either it returns errors or
it crashes. An other cause could be a bug in the ohci_hcd, but I do not
looked at it. The delay was just a test and it fixed the problem. That
is all the user wanted...
Regards.
--
Ken ar c'hentañ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/
prev parent reply other threads:[~2010-01-09 12:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-08 17:29 gspca - pac7302: Add a delay on loading the bridge registers Németh Márton
2010-01-09 12:36 ` Jean-Francois Moine [this message]
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