> I don't see why we need the #define, or is that another patch?
The define exists for the same reason that HAVE_xxx exists in
include/linux/netdevice.h and other headers: a feature test macro, so
code using this pointer can detect its presence or absence. The world
of drivers is not all in the kernel tarball, ya know ;-)
But as I said, the macro is misnamed, it should be
HAVE_UPPER_PRIVATE_DATA or similar.
Jeff
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