Alan Cox wrote:
> 
> > Yeah, I considered that, and it doesn't matter to me whether it
> > reports 0 or -1, but it's the data pointer that (mostly) requires
> > the #ifdefs, unless the data is always present or a dummy data pointer
> > is used.... ?
> 
> #define it to an inline without some arguments ?
~~~~~~~~~~~~~~~~~~
I can't get that to work, but someone else may be able to...

Here's another version for you to consider.

The [un]register_sysrq_key() calls return 0 when CONFIG_MAGIC_SYSRQ
is not defined/configured.
However, it sacrifices one small data structure of 3 pointers.

~Randy