diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
index 504832084eca91afcb43b2c694c4a2e72718c478..489b5dfdf5b9dae91deb861e0f5fb43938932dbb 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
@@ -40,7 +40,8 @@ int brcmf_debug_create_memdump(struct brcmf_bus *bus, const void *data,
 	if (!dump)
 		return -ENOMEM;
 
-	memcpy(dump, data, len);
+	if (data && len > 0)
+		memcpy(dump, data, len);
 	err = brcmf_bus_get_memdump(bus, dump + len, ramsize);
 	if (err) {
 		vfree(dump);