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| author | Bjorn Helgaas <bhelgaas@google.com> | 2012-02-23 20:18:59 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2012-02-23 20:18:59 -0700 |
| commit | a5390aa6dc3646b08bed421944cef0daf78ab994 (patch) | |
| tree | c7c84410c2db3ca93e912135cd3c1722d4b644ac | |
| parent | 844393f4c5e309dd262b27796471c47e348b57a8 (diff) | |
| download | linux-3.10-a5390aa6dc3646b08bed421944cef0daf78ab994.tar.gz linux-3.10-a5390aa6dc3646b08bed421944cef0daf78ab994.tar.bz2 linux-3.10-a5390aa6dc3646b08bed421944cef0daf78ab994.zip | |
PCI: don't publish new root bus until it's fully initialized
When pci_create_root_bus() adds the new struct pci_bus to the global
pci_root_buses list, the bus becomes visible to other parts of the
kernel, so it should be fully initialized.
This patch delays adding the bus to the pci_root_buses list until after
all the struct pci_bus initialization is finished.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
| -rw-r--r-- | drivers/pci/probe.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index dc904bd4b56..e4c0d1c6324 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1569,10 +1569,6 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, goto err_out; } - down_write(&pci_bus_sem); - list_add_tail(&b->node, &pci_root_buses); - up_write(&pci_bus_sem); - dev->parent = parent; dev->release = pci_release_bus_bridge_dev; dev_set_name(dev, "pci%04x:%02x", pci_domain_nr(b), bus); @@ -1612,6 +1608,10 @@ struct pci_bus *pci_create_root_bus(struct device *parent, int bus, dev_info(&b->dev, "root bus resource %pR\n", res); } + down_write(&pci_bus_sem); + list_add_tail(&b->node, &pci_root_buses); + up_write(&pci_bus_sem); + return b; class_dev_reg_err: |