>> In this case, we can improve it a little by add a guard >> if (!list_empty(bus->devices)). > > Great! > > I'm currently trying to bisect another problem, but hope to test this > patch (and the preceding patch it apparently needs) in a few days. > Please feel free to prod me if you think testing is needed but I'm > taking to long to report back. Hi Paul, Thank you for helping test. Because I have no machine to test this case, so your test report is very important, it can help us going in the right way to solve this problem. Thanks! Yijing. > > > . > -- Thanks! Yijing -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html