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SubjectRe: powerpc: hv{cs, si}_close() both unsigned hp->count and hvcsd->open_count cannot be negative
> Also, I don't see why those changes have anything to do with "unsigned
> things cannot be negative". As long as those counts are never zero on
> entry to those code sections, the existing code is fine, and I believe
> that assertion can be maintained. If you believe the code needs to
> defend against the possibility of a zero count on entry, that should
> have been explicitly stated in the patch description.

See the tty_port patches in -next - this is an argument about code which
ought eventually to go away replaced by standard helper functions.


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