On Thu, July 2, 2019 at 20:21:18PM +0000, Lukas wrote: > On Thu, Jun 27, 2019 at 12:16:18PM +0000, linmiaohe wrote: > > It's very nice of you if you could tell me why is 5*HZ there and if > > this delay can be reduced? > > According to Table 2-4 of the PCI Standard Hot-Plug Controller and Subsystem Specification, "System software is waiting 5 seconds to provide the user with an opportunity to cancel the hot-plug operation." > (http://drydkim.com/MyDocuments/PCI%20Spec/specifications/shpc1_0.pdf) > > So the reason the delay can't be reduced or removed is because the spec mandates it. > > Thanks, > > Lukas Many thanks for explaining this. Thanks a lot. Have a nice day. Best wishes.