Merge "Add comment explaining BpBinder::linkToDeath invalid operation" into main am: 4212ea2

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/3524953

Change-Id: I29e004d9d7be74244a6486430f61e88231304734
Signed-off-by: Automerger Merge Worker <[email protected]>

Author: Treehugger Robot

libs/binder/Binder.cpp

@@ -445,6 +445,9 @@ status_t BBinder::linkToDeath(
     const sp<DeathRecipient>& /*recipient*/, void* /*cookie*/,
     uint32_t /*flags*/)
 {
+    // BBinder::linkToDeath is invalid because this process owns this binder.
+    // The DeathRecipient is called on BpBinders when the process owning the
+    // binder node dies.
     return INVALID_OPERATION;
 }