Messages in this thread | | | Date | Mon, 15 Apr 2013 10:34:37 +0800 | From | Yijing Wang <> | Subject | Re: [PATCH 2/2] PCI/IA64: fix pci_dev->enable_cnt balance when doing pci hotplug |
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>> @@ -383,6 +383,7 @@ struct pci_bus *pci_acpi_scan_root(struct acpi_pci_root *root) >> } >> >> pci_scan_child_bus(pbus); >> + pci_enable_bridges(pbus); >> return pbus; >> >> out3: > > I think that with this patch, if you hot-add a PCI host bridge, you > will call pci_enable_bridges() twice (once in pci_acpi_scan_root() and > again in acpi_pci_root_add()), so there will be an enable_cnt error in > the opposite direction. > > I'd like to see the pci_enable_bridges() calls pushed up into the > generic code because I don't think there's anything arch-specific > about it.
Hi Bjorn, Thanks for your review and comments! This is my fault, I forgot we will enable pci bridges when we hot add host bridge. Push pci_enable_bridges() into the generic code is a good idea, so we don't need to consider enabling bridge in pci arch-specific code. In IA64 we don't assign the unassigned resources like other arch. This is also a weak point. I will update this patch and resend soon.
Thanks! Yijing. > > . >
-- Thanks! Yijing
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