[linux-dvb] [PATCH 1/3] Fix a problem during the access to the IER and ISR registers of the SA7146

Oliver Endriss o.endriss at gmx.de
Wed Dec 27 01:49:50 CET 2006

Dominik Strasser wrote:
> e9hack schrieb:
> > Dominik Strasser wrote:
> >   
> >> e9hack schrieb:
> >>     
> > I've looked  to saa7146_i2c_writeout() and to
> > wait_event_interruptible_timeout() again. The timeout value is
> > calculated after the transfer is started. A high load doesn't shorten
> > the real timeout. I think that the old value of 10ms is enough. There is
> > no error message from ves1820_writereg(). The values are written
> > correctly during the retries. The same timeout messages exist for the
> > (old) non interrupt transfer. But in this case the message is only
> > printed if I2C-debugging is enabled.. I think you will see this message
> > also with the (old) non interrupt transfer, if you change this debug
> > message to an always printed message.
> >   
> OK,
> what about the attached patch, to silence the other message (which also 
> swamped my logs after I've managed to silence this one) - see my other post.

Basically I have no problem to change this message back to a debug
message if nothing else helps. On the other hand I don't understand why
I2C timeouts might occur during normal operation of the driver.

Please try a lower I2C bitrate in the av7110 driver.
In av7110.c, line 2465, replace SAA7146_I2C_BUS_BIT_RATE_120 by
SAA7146_I2C_BUS_BIT_RATE_240. Does this help?


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