Commit e7f804e9 authored by Committed by Bastien NoceraBrowse files
device: Cancel the ongoing operation when releasing the device
If a device is currently verifying, identifying or enrolling we may want the user to stop the operation before we actually release the device. Otherwise we may end-up in trying to close (failing) the internal device, while fprintd is still considering the device active, causing a dead-lock (the device can't be released, but neither claimed again or stop the current action). In fact calling Claim() -> EnrollStart() -> Release(), we would fail with the error net.reactivated.Fprint.Error.Internal: Release failed with error: The device is still busy with another operation, please try again later. (36)" However, if we try to call VerifyStop, after this error, we'd fail because for the fprintd logic, the device is not claimed anymore, but actually closed, and we'd need to claim it again, but... That would still cause an internal error. To avoid this, in case Relase() is called cancel the ongoing operation, and wait until it's done before completing the release call.
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