Re: [PATCH][tentative] PCI / ACPI: Rework PCI host bridge removal toavoid sysfs warnings
From: Yinghai Lu
Date: Mon Jan 06 2014 - 14:28:48 EST
On Thu, Jan 2, 2014 at 4:45 PM, Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> wrote:
> On Thursday, January 02, 2014 02:47:04 PM Yinghai Lu wrote:
>> No. It should be before removing all root bus devices.
>> as they need to access the pci devices during stop ioapic and dmar.
>> Also ioapic itself could one one pci device.
> Well, if we stop drivers first, then stop ioapic/dmar and *then* remove
> devices, it is possible to rebind a driver to a device after ioapic/dmar has
> been stopped, which I guess will not lead to anything nice?
Not sure how that could happen.
If it would really happen, we could set dev->match_driver to 0 in pci_stop_dev.
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