On Tue, Jun 12, 2018 at 01:21:53PM +0530, poza@xxxxxxxxxxxxxx wrote: > On 2018-06-12 10:10, Sinan Kaya wrote: > > On 6/11/2018 6:29 PM, Keith Busch wrote: > > > A bridge that supports D3 but not hotplug will be subject to runtime > > > power management placing it in a non-operation power state if it > > > doesn't > > > have any devices attached. This patch will prevent this power > > > management > > > during error recovery so that the rescan at the end may be successful. > > > > If there is no card connected, why would the bridge observe a fatal > > error? > > fatal error could be coming from anywhere let us say below RootPort.. > and RP observes it and decides to take the tree down.... > Is that the case Keith is talking about ? Right, the err fatal handling removes all the devices below a bridge, making that bridge allowed for run time d3. > Why will re-enumeration be a problem even if runtime PM is active ? > I assume that enumeration will get bridge out of D3. That doesn't seem to be the case.
