How did the Chanak Crisis contribute to Canadian autonomy?

The Chanak Crisis of 1922 helped to assert Canadian
autonomy because, in that crisis, the Canadian Parliament (rather than the British
Parliament) decided what Canada's response to the crisis would
be.

In this episode, Turkish troops threatened to attack
British troops that were guarding the Dardanelles.  In the prelude to WWI, a few years
before, the British government had committed to a war without consulting the governments
of the other parts of the Commonwealth.  This time, Mackenzie King (PM of Canada) did
not allow this.  Instead, he had the Canadian Parliament debate what Canada's response
would be.  The Parliament did not decide anything before the crisis passed, but the
point that Canada would decide its own foreign policy was
made.

By giving Canada an opportunity to make this point,
the Chanak Crisis contributed to Canada's autonomy.