Re: gspca_ov534: Changing framerates, different behaviour in 2.6.36

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On Sat, 13 Nov 2010 16:45:37 +0100
Antonio Ospite <ospite@xxxxxxxxxxxxxxxxx> wrote:

> On Sat, 13 Nov 2010 16:12:05 +0100
> Antonio Ospite <ospite@xxxxxxxxxxxxxxxxx> wrote:
> 
> > guvcview:
> > 
> > If I:
> >  1. Go to the "Video & Files Tab"
> >  2. Change the "Frame Rate" value from the drop down menu
> > 
> [...]
> > 
> > since 2.6.36 + the regression fix in [1] (please apply it):
> >  3a. dmesg shows the message: ov534: frame_rate: xx
> >  3b. guvcviews gives some errors and the preview image halts:
> >        VIDIOC_QBUF - Unable to queue buffer: Invalid argument
> >        Could not grab image (select timeout):
> >                   Resource temporarily unavailable
> > 
> [...]
> > I am trying to spot what caused this, I guess it is something in
> > gspca_main, hopefully Jean-François has some idea that can help me
> > narrowing down the search.
> > 
> 
> Reverting f7059eaa285c0460569ffd26c43ae07e3f03cd6c brings the old
> behaviour back. So something there is not happy with changing frame
> rate on the fly.
> 

Ping.

Jean-François, I'll try to take a deeper look this week, but please tell
me if you have any guess about what can cause this issue.

Thanks,
   Antonio

-- 
Antonio Ospite
http://ao2.it

PGP public key ID: 0x4553B001

A: Because it messes up the order in which people normally read text.
   See http://en.wikipedia.org/wiki/Posting_style
Q: Why is top-posting such a bad thing?

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