Description
The comment says: "If there is no downstream Function exist, obtain its own BAR address."
However, based on the get_dsf_bdf() implementation, there does not appear to be any path that would allow the test to use the root port’s own BAR address.
This makes the current behavior inconsistent with the comment and may need clarification or code alignment.

Description
The comment says: "If there is no downstream Function exist, obtain its own BAR address."
However, based on the get_dsf_bdf() implementation, there does not appear to be any path that would allow the test to use the root port’s own BAR address.
This makes the current behavior inconsistent with the comment and may need clarification or code alignment.