diff --git a/camera/device/3.7/ICameraInjectionSession.hal b/camera/device/3.7/ICameraInjectionSession.hal
index f5797c3..9be9b25 100644
--- a/camera/device/3.7/ICameraInjectionSession.hal
+++ b/camera/device/3.7/ICameraInjectionSession.hal
@@ -24,7 +24,10 @@
 import @3.7::ICameraDeviceSession;
 
 /**
- * Injection Camera device active session interface.
+ * Injection camera device active session interface.
+ *
+ * Note that this is implemented on a special camera injection hal, if it is a
+ * general camera hal, it is not necessary to implement this interface.
  *
  * When an external camera is injected to replace the internal camera session, the
  * injection session will be established in camera framework, and then
diff --git a/current.txt b/current.txt
index 1fedaa0..df6f91d 100644
--- a/current.txt
+++ b/current.txt
@@ -910,5 +910,6 @@
 d0fb32f3ddeb9af7115ab32905225ea69b930d2472be8e9610f0cf136c15aefb android.hardware.keymaster@4.0::IKeymasterDevice # b/210424594
 ca62a2a95d173ed323309e5e00f653ad3cceec82a6e5e4976a249cb5aafe2515 android.hardware.neuralnetworks@1.2::types
 fa76bced6b1b71c40fc706c508a9011284c57f57831cd0cf5f45653ed4ea463e android.hardware.neuralnetworks@1.3::types
+700d9de9b47984898789f5706e59285ea6fe83aa5744dccf8491c4b881033ae7 android.hardware.camera.device@3.7::ICameraInjectionSession
 
 # There should be no more HIDL HALs - please use AIDL instead.