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

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Tue Mar 3 00:13:00 AEDT 2020


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

Wolfram Sang (wsa at the-dreams.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |ASSIGNED
         Regression|No                          |Yes

--- Comment #15 from Wolfram Sang (wsa at the-dreams.de) ---
"I guess so 'cause if I build i2c_powermac as a module and manually modprobe
it, all the relevant windfarm modules get pulled in. But not before."

Maybe there is a module dependency I overlooked so far, but at least there is
no code loading the pm72 module from i2c-powermac.

However, the bisect is very valuable and very likely the commit is the culprit.
I was suspecting something changed the MODINFO, so loading fails, but I missed
this commit, so far. Also, it took me two approaches until I understood all the
behaviour involved. Macintosh drivers are still confusing.

I will cook up a patch to test later today to see if I was right.

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