On Sunday 06 January 2008 05:37:40 Alan P. Kennedy Sr. wrote:
> Hans,
>
> Thanks for all the great work on the ivtv driver, and the excellent
> support.
>
> Anyway sorry to send the list and you on a chase after bugs that
> probably don't exist.
>
> After running for about a week with .udelay = 10, I started seeing
> the following error again, and lost sound on recordings:
>
> i2c-adapter i2c-3: sendbytes: error - bailout.
> msp3400 3-0040: I/O error #0 (read 0x10/0x200)
>
> This error is always on the same card.
>
> My problem could be a defective pvr 350 card. I pulled the card and
> has not seen a problem or any errors with my other pvr 350 card. I
> guess the only way to test this card is setup a system under windows,
> which I can't do at the current time.
Hi Alan,
I learned that there were some changes inside the i2c core since 2.6.22
that change the timings of the i2c writes. Just for fun try to increase
the udelay from 10 to 15 and see if that solves the problem.
Still very odd that it only happens with your card though.
Regards,
Hans
>
> Thanks again,
>
> Alan
>
> On Thu, Dec 20, 2007 at 10:22:13PM -0600, A. P. Kennedy wrote:
> > >>>>> "H" == Hans Verkuil <[EMAIL PROTECTED]> writes:
> >
> > H> On Tuesday 18 December 2007 06:15:51 A. P. Kennedy wrote:
> > >> >>>>> "H" == Hans Verkuil <[EMAIL PROTECTED]> writes:
> >
> > H> On Monday 17 December 2007 02:43:44 A. P. Kennedy wrote:
> > >> >> I have been having this problem with the latest development
> > >> >> >>
> > >>
> > >> snapshots. Really started with kernel 2.6.22 and the ivtv
> > >> driver
> > >>
> > >> >> in the kernel.
> > >> >>
> > >> >> Currently using kernel - 2.6.23.11 v4l-dvd - updated
> > >> >> 12/16/2007 to lastest master repository. This version also
> > >> >> contains the >>
> > >>
> > >> ivtvfb module.
> > >>
> > >> >> mythtv - latest svn update from today 12/16/2007.
> > >> >>
> > >> >> I have started having the following errors.
> > >> >>
> > >> >> i2c-adapter i2c-3: sendbytes: error - bailout. msp3400
> > >> >> 3-0040: I/O error #0 (read 0x10/0x200) i2c-adapter i2c-3:
> > >> >> sendbytes: >>
> > >>
> > >> error - bailout. msp3400 3-0040: I/O error #0 (read 0x10/0x200)
> > >> >> i2c-adapter i2c-3: sendbytes: error - bailout. msp3400
> > >> 3-0040: >> I/O error #0 (read 0x10/0x200) i2c-adapter i2c-2:
> > >> sendbytes: >> error - bailout. msp3400 2-0040: I/O error #0
> > >> (read 0x10/0x200) >> i2c-adapter i2c-3: sendbytes: error -
> > >> bailout. msp3400 3-0040: >> I/O error #0 (read 0x10/0x200)
> > >>
> > >> >> What does this error mean?
> > >> >>
> > >> >> When this error occurs I lose the sound on the recording,
> > >> >> and wife gets mad ;-)
> > >> >>
> > >> >> It is strange because this error does not happen all the
> > >> >> time, and the next recording usually is okay.
> > >> >>
> > >> >> I did a search of the mailing list, and one user upgrade to
> > >> >> the lastest v4l-dvb to resolve this problem. However, no
> > >> >> luck here. Anything else I can try? Thanks for any help on
> > >> >> this matter.
> >
> > H> Just about the only thing that could cause this would be an i2c
> > H> timing change. Use the v4l-dvb repository, edit file
> > ivtv-i2c.c, H> search for this line:
> >
> > H> .udelay = 5,
> >
> > H> and replace the 5 with 10. Try again and see if this solves the
> > H> problem. Please let me know the result.
> >
> > H> The i2c timings were changed to speed up the firmware load, but
> > H> this might have introduced problems in this area.
> >
> > H> Regards,
> >
> > H> Hans
> >
> > H> _______________________________________________ ivtv-devel
> >
> > >> mailing H> list [EMAIL PROTECTED]
> >
> > H> http://ivtvdriver.org/mailman/listinfo/ivtv-devel
> >
> > >> Thanks that did the trick. Usually this error would occur
> > >> within 10-20 minutes after a recording would start. No error
> > >> after recording for several hours tonight, and no problems with
> > >> audio recordings have been noted.
> >
> > H> OK, good news. Can you try to use the values 6, 7, 8 and 9 as
> > well H> and see until which value you still get errors? And I also
> > like to H> know which msp chip you have (should be in the kernel
> > log).
> >
> > H> Thanks,
> >
> > H> Hans
> >
> > msp chip is MSP4448G-A2
> >
> > Here are the results: Between runs the computer was turned off
> > for 2-3 minutes.
> >
> > .udelay = 6
> > i2c-adapter i2c-2: sendbytes: error - bailout.
> > msp3400 2-0040: I/O error #0 (read 0x10/0x200)
> >
> > .udelay = 7
> > i2c-adapter i2c-2: sendbytes: error - bailout.
> > msp3400 2-0040: I/O error #0 (read 0x10/0x200)
> >
> > .udelay = 8
> > no errors
> >
> > .udelay = 9
> > no errors
> >
> > .udelay = 10
> > no errors
> >
> > Currently using .udelay = 8.
> >
> > Hope this helps.
> >
> > Alan
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