[Bug 199471] [Bisected][Regression] windfarm_pm* no longer gets automatically loaded when CONFIG_I2C_POWERMAC=y is set

https://bugzilla.kernel.org/show_bug.cgi?id=199471

--- Comment #17 from Erhard F. (erhard_f@mailbox.org) ---

(In reply to Wolfram Sang from comment #16)

Created attachment 287755 [details]
proof-of-concept patch for testing

Here is the promised patch. I converted all I2C MODULE tables. pm72 didn't
have one, so we will see what pulls it in.

A test with a machine needing the lm75 driver would be great. Because some
code change was needed there.

Excellent! Applied your patch on 5.6-rc4 and it just works fine on my G5 11,2!
I can leave CONFIG_WINDFARM=m and the correct modules get pulled in just as it
was before kernel 4.17.

I can't test on the G5 7,3 from my original bug report 'cause I sold this one.
But from my understanding this "lm75" sensor is used in pretty any windfarm_pm*
module?
 # grep -i lm75 drivers/macintosh/windfarm_pm*.c
drivers/macintosh/windfarm_pm112.c:     request_module("windfarm_lm75_sensor");
drivers/macintosh/windfarm_pm121.c:            
request_module("windfarm_lm75_sensor");
drivers/macintosh/windfarm_pm72.c:      request_module("windfarm_lm75_sensor");
drivers/macintosh/windfarm_pm81.c:             
request_module("windfarm_lm75_sensor");
drivers/macintosh/windfarm_pm91.c:             
request_module("windfarm_lm75_sensor");

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