Service_USB 2 - Release USB device configuration setting
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Service_USB 2 - Release USB device configuration setting

Service_USB 2 - Release USB device configuration setting — Application request to release USB device configuration setting

On Entry

R02 (reason code)
R1&80C00 (USB Service call)
R2Pointer to controller structure
R3Pointer to device structure

On Exit

All registers preserved to pass on, else

R00 to refuse access or 1 to cause a re-try later.
R10 to claim or preserved to pass on.
R2, R3preserved

Use

Must be broadcast by an application which wants to change the configuration of device to inform other applications using the device. If rejected with a 1 result the application may wait for a Service_USB 0 and can afterwards retry to do the change.

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