diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2013-05-07 14:35:44 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-11 07:18:38 -0700 |
| commit | bb22b7608a6b27cb585f0fc38c49c4e99e7d8038 (patch) | |
| tree | 6810c0765cd4a53a659c0d611fbf650bba9aa429 | |
| parent | f2e426a46a35a8cd30c7c7c39e099f7bd857ce0b (diff) | |
PCI: Delay final fixups until resources are assigned
commit e253aaf0af51c1e4dc7dd3b26ea8e666bf9a2d8d upstream.
Commit 4f535093cf "PCI: Put pci_dev in device tree as early as possible"
moved final fixups from pci_bus_add_device() to pci_device_add(). But
pci_device_add() happens before resource assignment, so BARs may not be
valid yet.
Typical flow for hot-add:
pciehp_configure_device
pci_scan_slot
pci_scan_single_device
pci_device_add
pci_fixup_device(pci_fixup_final, dev) # previous location
# resource assignment happens here
pci_bus_add_devices
pci_bus_add_device
pci_fixup_device(pci_fixup_final, dev) # new location
[bhelgaas: changelog, move fixups to pci_bus_add_device()]
Reference: https://lkml.kernel.org/r/20130415182614.GB9224@xanatos
Reported-by: David Bulkow <David.Bulkow@stratus.com>
Tested-by: David Bulkow <David.Bulkow@stratus.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/pci/bus.c | 1 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 1 |
2 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 8647dc6f52d..f9c61fb802b 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -174,6 +174,7 @@ int pci_bus_add_device(struct pci_dev *dev) * Can not put in pci_device_add yet because resources * are not assigned yet for some devices. */ + pci_fixup_device(pci_fixup_final, dev); pci_create_sysfs_dev_files(dev); dev->match_driver = true; diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index b494066ef32..54277879124 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1339,7 +1339,6 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) list_add_tail(&dev->bus_list, &bus->devices); up_write(&pci_bus_sem); - pci_fixup_device(pci_fixup_final, dev); ret = pcibios_add_device(dev); WARN_ON(ret < 0); |