Re: CONFIG_EXPERT is a booby trap

[Mikael Pettersson]

Tim Shepard writes:
 > This weekend I finally figured out why the keyboard in my MacBook Pro
 > stopped working between 3.4 and 3.5.
 > 
 > When I turned on CONFIG_EXPERT it turned off CONFIG_HID_APPLE.  There
 > was no warning that selecting "Configure standard kernel features" will
 > invisibly turn off needed things elsewhere in the configuration tree.
 > 
 > Something needs to be fixed, but it's not obvious that any simple change
 > will work without causing other troubles.

"diff" the before and after .config files.  That's alerted me to unexpected
changes (not just "where did CONFIG_${foo} go?" but also "wtf is CONFIG_${bar}
doing there?") on numerous occasions.
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