Comment 8 for bug 1909428

Test OK with 5.4 Focal (5.4.0-73.82) on node entei:
 # selftests: powerpc/eeh: eeh-basic.sh
 # 0000:00:00.0, Skipped: bridge
 # 0001:00:00.0, Skipped: bridge
 # 0020:00:00.0, Skipped: bridge
 # 0021:00:00.0, Skipped: bridge
 # 0021:01:00.0, Skipped: bridge
 # 0021:02:01.0, Skipped: bridge
 # 0021:02:08.0, Skipped: bridge
 # 0021:02:09.0, Skipped: bridge
 # 0021:02:0a.0, Skipped: bridge
 # 0021:02:0b.0, Skipped: bridge
 # 0021:02:0c.0, Skipped: bridge
 # 0021:0d:00.0, Added
 # 0021:0e:00.0, Skipped: ahci doesn't support recovery
 # 0021:0f:00.0, Skipped: bridge
 # 0021:10:00.0, Added
 # 0022:00:00.0, Skipped: bridge
 # 0022:01:00.0, Added
 # Found 3 breakable devices...
 # Breaking 0021:0d:00.0...
 # 0021:0d:00.0, waited 0/60
 # 0021:0d:00.0, waited 1/60
 # 0021:0d:00.0, waited 2/60
 # 0021:0d:00.0, waited 3/60
 # 0021:0d:00.0, waited 4/60
 # 0021:0d:00.0, waited 5/60
 # 0021:0d:00.0, waited 6/60
 # 0021:0d:00.0, waited 7/60
 # 0021:0d:00.0, waited 8/60
 # 0021:0d:00.0, Recovered after 9 seconds
 # Breaking 0021:10:00.0...
 # 0021:10:00.0, Recovered after 0 seconds
 # Breaking 0022:01:00.0...
 # 0022:01:00.0, waited 0/60
 # 0022:01:00.0, waited 1/60
 # 0022:01:00.0, waited 2/60
 # 0022:01:00.0, waited 3/60
 # 0022:01:00.0, waited 4/60
 # 0022:01:00.0, Recovered after 5 seconds
 # 0 devices failed to recover (3 tested)
 ok 1 selftests: powerpc/eeh: eeh-basic.sh