I guess no need to bisect. I found that the child device patches were reverted by another commit (6207937d4feea000913e8ca23fe20c7744be7847) because they caused trouble for other people. I posted on the relevant report (bug #22785) so I hope that Zhao Yakui can look into another solution.
I guess no need to bisect. I found that the child device patches were reverted by another commit (6207937d4feea0 00913e8ca23fe20 c7744be7847) because they caused trouble for other people. I posted on the relevant report (bug #22785) so I hope that Zhao Yakui can look into another solution.