Index: kernel/generic/src/lib/ra.c
===================================================================
--- kernel/generic/src/lib/ra.c	(revision 45f7449e0a82becbb9eb64d8afe4237b1bb85912)
+++ kernel/generic/src/lib/ra.c	(revision b0c2075a579bc0b7840d9dd5002780f078d9c041)
@@ -391,7 +391,5 @@
 
 	irq_spinlock_lock(&arena->lock, true);
-	list_foreach(arena->spans, cur) {
-		ra_span_t *span = list_get_instance(cur, ra_span_t, span_link);
-
+	list_foreach(arena->spans, span_link, ra_span_t, span) {
 		base = ra_span_alloc(span, size, alignment);
 		if (base)
@@ -407,7 +405,5 @@
 {
 	irq_spinlock_lock(&arena->lock, true);
-	list_foreach(arena->spans, cur) {
-		ra_span_t *span = list_get_instance(cur, ra_span_t, span_link);
-
+	list_foreach(arena->spans, span_link, ra_span_t, span) {
 		if (iswithin(span->base, span->size, base, size)) {
 			ra_span_free(span, base, size);