Re: A question about shpcp.

From: linmiaohe
Date: Tue Jul 02 2019 - 09:14:09 EST


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.