resource: Introduce resource_intersection() for overlapping resources (f65674df) · Commits · 戴 / test

There will be at least one user that can utilize new helper. Provide the helper for future user and for wider use. Signed-off-by:

include/linux/ioport.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -236,6 +236,16 @@ static inline bool resource_overlaps(struct resource r1, struct resource r2)
		return r1->start <= r2->end && r1->end >= r2->start;
		}

		static inline bool
		resource_intersection(struct resource r1, struct resource r2, struct resource *r)
		{
		if (!resource_overlaps(r1, r2))
		return false;
		r->start = max(r1->start, r2->start);
		r->end = min(r1->end, r2->end);
		return true;
		}

		static inline bool
		resource_union(struct resource r1, struct resource r2, struct resource *r)
		{