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ble_hs_stop.c: Prevent duplicate entries in ble_hs_stop_listeners. #2

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ble_hs_stop.c: Prevent duplicate entries in ble_hs_stop_listeners. #2

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9 changes: 9 additions & 0 deletions nimble/host/src/ble_hs_stop.c
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Original file line number Diff line number Diff line change
Expand Up @@ -172,8 +172,17 @@ static void
ble_hs_stop_register_listener(struct ble_hs_stop_listener *listener,
ble_hs_stop_fn *fn, void *arg)
{
struct ble_hs_stop_listener *node;
BLE_HS_DBG_ASSERT(fn != NULL);

// Check, if the to-be-inserted list/node is already in the list
// If it is, do NOT insert it.
SLIST_FOREACH(node, &ble_hs_stop_listeners, link) {
if (listener == node) {
return;
}
}

listener->fn = fn;
listener->arg = arg;
SLIST_INSERT_HEAD(&ble_hs_stop_listeners, listener, link);
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