Messages in this thread | | | Date | Tue, 13 Mar 2012 15:23:30 +0800 | From | Jiang Liu <> | Subject | Re: [PATCH 2/5] Correctly clean up pci root buses in function pci_remove_bus() |
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Hi Yinghai, Good points! It's safe with current implementation because all root bus hotplug operations are under protection of pci_remove_rescan_mutex.
On 2012-3-13 14:24, Yinghai Lu wrote: > On Sun, Mar 11, 2012 at 10:48 AM, Jiang Liu<liuj97@gmail.com> wrote: >> The function pci_create_root_bus() allocates the pci bus structure, >> registers the bus device and creates the legacy files for a pci root >> bus, but returns without setting the is_added flag. The is_added flag >> for a pci root bus will be set by function pci_scan_child_bus(). > >> If a pci root bus is destroyed before calling pci_scan_child_bus(), >> the is_added flag will not be set. > > how that can be met? > > Do we have pci_remove_rescan_mutex around them? > > Yinghai > >
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