> Ok, I see what you mean. I had a look at the place in question and > wonder what to return from i2c_add_mux_adapter() in the disabled > case so that i2c-mux-pinctrl is still happy with the returned value. Ouch, you are right. The crux of interfaces returning NULL instead of an ERR_PTR :( I'll have a look, I maybe started to fix this somewhen. > I guess what you want to have is that i2c_add_adapter() is not called > for the disabled case, right? I think that makes sense. > Is the i2c_adapter struct prepared in i2c_mux_add_adapter() still valid > if i2c_add_adapter() is not called? I will have a closer look to the issue this weekend. > Sorry, I am not too deep into i2c subsystem, I just reworked i2c-mux- > pinctrl to make it work on Dove. If you are fine with giving me some > guidance how you prefer to have it done, I can try to free some spare > time. Cool, thanks. Learning by doing is a good way to get such knowledge :) > Unfortunately there is already little of it, so please don't > expect a quick tested patch. I understand. Thanks, Wolfram
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