Android Hal is not registered at runtime in Android R(11)

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I added my hal interface in manifest.xml, vendor_compatibilityMatrix.xml, and also in device.mk. And also I have created hal.rc file as well for my hal. but at boot time i am getting below error....

03-07 09:53:19.541 242 242 I hwservicemanager: Since [email protected]::IinputServer/default is not registered, trying to start it as a lazy HAL.

so, could anyone tell me what i am doing wrong or i am missing something.

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Change "IinputServer" HAL Name to "IInputServer". As coding guidelines in Hal Interface name should be start with I followed by Capital letter.

https://source.android.google.cn/devices/architecture/hidl/code-style