On 8/20/2018 5:53 PM, Benjamin Herrenschmidt wrote:
Hotplug driver removes the devices on link down events and re-enumerates
on insertion.
I am trying to separate fatal error handling from hotplug.
I'll try to take a look. We can't always count on pciehp to do the
removal when a removal occurs, though. The PCIe specification contains
an implementation note that DPC may be used in place of hotplug surprise.
Can't you use the presence detect to differenciate ?
Also, I don't have the specs at hand right now, but does the hotplug
brigde have a way to "latch' the change in presence detect so we can
see if it has transitioned even if it's back on ?
There is only presence detect change and link layer change. No actual
state information.
