lkml.org 
[lkml]   [2009]   [Mar]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v4 06/12] PCI: Introduce pci_rescan_bus()
* Andrew Morton <akpm@linux-foundation.org>:
> On Wed, 18 Mar 2009 16:39:56 -0600 Alex Chiang <achiang@hp.com> wrote:
>
> > +/**
> > + * pci_rescan_bus - scan a PCI bus for devices.
> > + * @bus: PCI bus to scan
> > + *
> > + * Scan a PCI bus and child buses for new devices, adds them,
> > + * and enables them.
> > + *
> > + * Returns the max number of subordinate bus discovered.
> > + */
> > +unsigned int __devinit pci_rescan_bus(struct pci_bus *bus)
> > +{
> > + unsigned int max;
> > + struct pci_dev *dev;
> > +
> > + max = pci_scan_child_bus(bus);
> > + list_for_each_entry(dev, &bus->devices, bus_list)
> > + if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
> > + dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
> > + if (dev->subordinate)
> > + pci_bus_size_bridges(dev->subordinate);
> > +
> > + pci_bus_assign_resources(bus);
> > + pci_enable_bridges(bus);
> > + pci_bus_add_devices(bus);
> > +
> > + return max;
> > +}
>
> The conspicuous lack of locking for the list walk requires either
>
> a) documenting or
> b) fixing

Ok, will figure out (a) or (b).

Thanks.

/ac



\
 
 \ /
  Last update: 2009-03-19 18:15    [from the cache]
©2003-2014 Jasper Spaans. Advertise on this site