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| author | Yinghai Lu <yinghai@kernel.org> | 2013-05-07 14:35:44 -0600 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-05-07 14:35:44 -0600 |
| commit | e253aaf0af51c1e4dc7dd3b26ea8e666bf9a2d8d (patch) | |
| tree | 1e108b6df63cd51372246fdc2281cffaa548b6a1 /drivers/pci | |
| parent | dd72be99d11dbf738d910a38479ce414a51eb21e (diff) | |
| download | op-kernel-dev-e253aaf0af51c1e4dc7dd3b26ea8e666bf9a2d8d.zip op-kernel-dev-e253aaf0af51c1e4dc7dd3b26ea8e666bf9a2d8d.tar.gz | |
PCI: Delay final fixups until resources are assigned
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>
CC: stable@vger.kernel.org # v3.9+
Diffstat (limited to 'drivers/pci')
| -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 748f8f3..32e66a6 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 43ece5d..67cd045 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -1341,7 +1341,6 @@ 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); |
