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-rw-r--r--drivers/firmware/memmap.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/firmware/memmap.c b/drivers/firmware/memmap.c
index 1815849f83cb..79f18e6d9c4f 100644
--- a/drivers/firmware/memmap.c
+++ b/drivers/firmware/memmap.c
@@ -286,6 +286,10 @@ int __meminit firmware_map_add_hotplug(u64 start, u64 end, const char *type)
{
struct firmware_map_entry *entry;
+ entry = firmware_map_find_entry(start, end - 1, type);
+ if (entry)
+ return 0;
+
entry = firmware_map_find_entry_bootmem(start, end - 1, type);
if (!entry) {
entry = kzalloc(sizeof(struct firmware_map_entry), GFP_ATOMIC);