[linux-dvb] saa7146_i2c_writeout: timed out waiting for end of xfer

Soeren Sonnenburg dvb-ml at nn7.de
Wed Aug 22 15:15:15 CEST 2007


On Sun, 2007-08-19 at 01:05 +0200, Oliver Endriss wrote:
> Soeren Sonnenburg wrote:
> > On Tue, 2007-07-31 at 14:37 +0200, Oliver Endriss wrote:
> > > Stone wrote:
> > > > On 7/17/07, Oliver Endriss <o.endriss at gmx.de> wrote:
> > > > >
> > > > > Oliver Endriss wrote:
> > > > > > Imho the interrupt processing was broken:
> > > > > > - The first I2C interrupt should be used to wake-up the task.
> > > > > >   It does not matter that it takes some time until ERR in IIC_STA
> > > > > >   will be updated. We don't need it.
> > > > > > - Interrupts must be acknowledged at the end of the ISR.
> > > > > >
> > > > > > @all
> > > > > > Please test the attached patch.
> > > > > > There shouldn't be any unexpected I2C interrupts anymore.
[...]
> > I was now using this patch for 1-2 weeks. This setup has a FF-dvb-c and
> > a budget dvb-t card and after the patch there were no more timeout
> > messages. However since I added the asus p7131 I am seeing this message
> > regularly again (44 times in the last 5 days).
> > 
> > Thanks for investigating on this!!
> > Soeren
> 
> Just to be sure:
> You are using exactly the same setup, except for the new asus p7131?

yes, same setup + additional asus p7131.

> Strange. Maybe a power supply problem. Could you try another power
> supply for your machine?

This is a brand new power supply already (because I thought at some
point the usb disconnects were caused by a flaky power supply). However
following Hermanns suggestion I permuted the cards in the slots. One day
of up-time so far without seeing this message...

I will report back when the messages re-appear...

Soeren



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