On Thu, Feb 27, 2020 at 06:44:56PM -0500, Sinan Kaya wrote:
> On 2/27/2020 4:45 PM, Bjorn Helgaas wrote:
> > The 60 second timeout came from 821cdad5c46c ("PCI: Wait up to 60
> > seconds for device to become ready after FLR") and is probably too
> > long. We probably should pick a smaller value based on numbers from
> > the spec and make quirks for devices that needed more time.
>
> If I remember right, there was no time mention about how long to
> wait. Spec says device should send CRS as long as it is not ready.
Not exactly.. there are some requirements to follow for rules after
a conventional reset.
Look for "The second set of rules addresses requirements placed on the system"
i'm looking a the 5.0 spec (around page 553) :-).
In general 1s seems good enough for most cases. For ports that support
> 5gt/s transfer speed, it says 100ms after link training completes.
I'm not sure if this means 100ms after getting a DLLSC event?
