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

Oliver Endriss o.endriss at gmx.de
Tue Jul 10 00:16:00 CEST 2007


Manfred Petz wrote:
> On Sat, 2007-05-26 at 10:22 +0200, Soeren Sonnenburg wrote:
> > Dear list,
> > 
> > since post 2.6.19 I keep getting flooded with 
> > 
> > saa7146_i2c_writeout: timed out waiting for end of xfer
> > 
> 
> hi,
> 
> i'm experiencing a similar problem. using 2.6.19.1 with latest hg dvb
> driver (knc-1 dvb-s) everything works. though, from at least 2.6.19.7
> on, with the same kernel config and same hardware (same dvb drivers), i
> get those i2c timeouts and, when doing 'modprobe budget-av', not all
> cards get deteced. 
> 
>   kernel: KNC1-5: Could not read MAC from KNC1 card
>   kernel: saa7146_i2c_writeout: timed out waiting for end of xfer
>   last message repeated 7 times
>   budget-av: A frontend driver was not found for device 1131/7146 subsystem 1894/0016
> 
> since i'm using the same dvb driver, that problem seems to be triggered
> somewhere else.

Could you please try the attached patch (saa7146_i2c_retry.diff)?

If it does not help, please try the second patch
(budget-av_slowi2c.diff).

Any improvements?

Oliver

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