diff options
| -rw-r--r-- | src/include/memrange.h | 3 | ||||
| -rw-r--r-- | src/lib/memrange.c | 10 |
2 files changed, 12 insertions, 1 deletions
diff --git a/src/include/memrange.h b/src/include/memrange.h index ba85bef4d9..048c28754d 100644 --- a/src/include/memrange.h +++ b/src/include/memrange.h @@ -75,6 +75,9 @@ static inline void range_entry_update_tag(struct range_entry *r, #define memranges_each_entry(r, ranges) \ for (r = (ranges)->entries; r != NULL; r = r->next) +/* Initialize memranges structure */ +void memranges_init_empty(struct memranges *ranges); + /* Initialize and fill a memranges structure according to the * mask and match type for all memory resources. Tag each entry with the * specified type. */ diff --git a/src/lib/memrange.c b/src/lib/memrange.c index a85bc01d49..d2ffa26e99 100644 --- a/src/lib/memrange.c +++ b/src/lib/memrange.c @@ -228,6 +228,9 @@ static void do_action(struct memranges *ranges, resource_t end; resource_t begin; + if (size == 0) + return; + /* The addresses are aligned to 4096 bytes: the begin address is * aligned down while the end address is aligned up to be conservative * about the full range covered. */ @@ -290,11 +293,16 @@ void memranges_add_resources(struct memranges *ranges, memranges_add_resources_filter(ranges, mask, match, tag, NULL); } +void memranges_init_empty(struct memranges *ranges) +{ + ranges->entries = NULL; +} + void memranges_init(struct memranges *ranges, unsigned long mask, unsigned long match, unsigned long tag) { - ranges->entries = NULL; + memranges_init_empty(ranges); memranges_add_resources(ranges, mask, match, tag); } |