[PATCH v2 4/4] PCI/AER: Dont do recovery when DPC is enabled

On 11/17/2017 7:02 PM, Bjorn Helgaas wrote:

quoted

What do you think about the rescan following link up? The only entity
that does rescan today is hotplug after DPC recovery. There could be
a platform with DPC support but no hotplug support. 

How should we handle it?

Good question.  If your system does support both DPC and hotplug, I
assume the link comes back up after you clear DPC Trigger Status.
Does pciehp notice that "link up" event and add the device back?

that's correct. we see a link up indication from hotplug driver followed
by a rescan.

So I think your question is whether the DPC code should explicitly do
a rescan so that if we don't have pciehp, we'll still automatically
rediscover the device.  I dunno, maybe.  Seems like a plausible idea
anyway.

OK, will add it to DPC driver for completeness.


-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.