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diff --git a/sys/dev/iommu/iommu_gas.c b/sys/dev/iommu/iommu_gas.c
--- a/sys/dev/iommu/iommu_gas.c
+++ b/sys/dev/iommu/iommu_gas.c
@@ -398,16 +398,11 @@
*/
entry = first;
while (entry != NULL) {
- if ((first = RB_LEFT(entry, rb_entry)) != NULL) {
- if (first->last >= a->common->lowaddr) {
- /* All remaining ranges >= lowaddr */
- break;
- }
- if (iommu_gas_match_one(a, first->last, entry->start,
- a->common->lowaddr)) {
- iommu_gas_match_insert(a);
- return (0);
- }
+ if ((first = RB_LEFT(entry, rb_entry)) != NULL &&
+ iommu_gas_match_one(a, first->last, entry->start,
+ a->common->lowaddr)) {
+ iommu_gas_match_insert(a);
+ return (0);
}
if (entry->end >= a->common->lowaddr) {
/* All remaining ranges >= lowaddr */

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