Re: gspca - pac7302: Add a delay on loading the bridge registers.

[Jean-Francois Moine]

On Fri, 08 Jan 2010 18:29:02 +0100
Németh Márton  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   
> 
> 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/
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Re: gspca - pac7302: Add a delay on loading the bridge registers.

[Németh Márton]

Hi,

At http://linuxtv.org/hg/~jfrancois/gspca/rev/b0a374674388 :
> From: Jean-Francois Moine 
>
> 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 

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?

Regards,

Márton Németh
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