driver core: fw_devlink: Improve logs for cycle detection

The links in a cycle are not all logged in a consistent manner or not
logged at all. Make them consistent by adding a "cycle:" string and log all
the link in the cycles (even the child ==> parent dependency) so that it's
easier to debug cycle detection code. Also, mark the start and end of a
cycle so it's easy to tell when multiple cycles are logged back to back.

Signed-off-by: Saravana Kannan <>
Tested-by: Xu Yang <>
Signed-off-by: Greg Kroah-Hartman <>
1 file changed