Re: [PATCH v2 3/8] PCI: acpiphp: enable_device(): rescan even if no new devices on slot

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On Thursday, July 11, 2013 08:11:44 AM Mika Westerberg wrote:
> On Thu, Jul 11, 2013 at 02:25:42AM +0200, Rafael J. Wysocki wrote:
> > On Wednesday, July 03, 2013 05:04:50 PM Mika Westerberg wrote:
> > > From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
> > > 
> > > pci_scan_slot() returns number of new devices connected *directly*
> > > connected to the slot. Current enable_device() checks the return value
> > > and stops if it doesn't see a new device.
> > > 
> > > In Thunderbolt chaining case the new device can be deeper in hierarchy, so
> > > do the rescan anyway.
> > > 
> > > Because of that we must make sure that pcibios_resource_survey_bus() and
> > > check_hotplug_bridge() get called only for a just found bus and not the
> > > ones already added to the system. Failure to do so will lead to resource
> > > conflicts.
> > 
> > Well, I wonder what we're doing to this end, because there's nothing in that
> > area in the patch?
> 
> We forgot to update the changelog of this patch. The last paragraph should
> not be there.

Yeah, I noticed that later.  Never mind. :-)


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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