Re: [PATCH 1/2] i2c: Multiplexed I2C bus core support.

[Michael Lawnick <ml.lawnick-Mmb7MZpHnFY@public.gmane.org>]

Jean Delvare said the following:
> One thing I forgot:
> 
>> > +		result = i2c_check_clients(to_i2c_adapter(adapter->dev.parent), addr);
>> > +	
>> > +	return result;
>> > +}
> 
> As discussed some weeks ago, this isn't actually sufficient. You don't
> only need to check the parent segments for address business, you also
> need to check all child segments, recursively. If any child segment has
> a device using the address in question, then you can't use it.
> 
> This may be more difficult to implement. In particular, you'll have to
> pay attention to locking.
> 
:-) This can't happen if we keep the part you commented on in the other
mail about probing for client one level above. Then this situation can't
arise.

-- 
KR
Michael