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| author | Bjorn Helgaas <bhelgaas@google.com> | 2013-11-06 10:00:51 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-11-07 14:53:39 -0700 |
| commit | 79272138bd5c35edb9be5ae7b473a2741751a706 (patch) | |
| tree | 0017bfd5e4bb584e59ed1852d41609cb3953c913 /drivers/pci/pci.c | |
| parent | c6bde215acfd637708142ae671843b6f0eadbc6d (diff) | |
| download | blackbird-obmc-linux-79272138bd5c35edb9be5ae7b473a2741751a706.tar.gz blackbird-obmc-linux-79272138bd5c35edb9be5ae7b473a2741751a706.zip | |
PCI: Enable upstream bridges even for VFs on virtual buses
Previously we enabled the upstream PCI-to-PCI bridge only when
"dev->bus->self != NULL". In the case of a VF on a virtual bus, where
"bus->self == NULL", we didn't enable the upstream bridge.
This fixes that by enabling the upstream bridge of the PF corresponding to
the VF.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index ac40f90cfd5f..d3ed931c0770 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1148,12 +1148,12 @@ int pci_reenable_device(struct pci_dev *dev) static void pci_enable_bridge(struct pci_dev *dev) { + struct pci_dev *bridge; int retval; - if (!dev) - return; - - pci_enable_bridge(dev->bus->self); + bridge = pci_upstream_bridge(dev); + if (bridge) + pci_enable_bridge(bridge); if (pci_is_enabled(dev)) { if (!dev->is_busmaster) @@ -1170,6 +1170,7 @@ static void pci_enable_bridge(struct pci_dev *dev) static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags) { + struct pci_dev *bridge; int err; int i, bars = 0; @@ -1188,7 +1189,9 @@ static int pci_enable_device_flags(struct pci_dev *dev, unsigned long flags) if (atomic_inc_return(&dev->enable_cnt) > 1) return 0; /* already enabled */ - pci_enable_bridge(dev->bus->self); + bridge = pci_upstream_bridge(dev); + if (bridge) + pci_enable_bridge(bridge); /* only skip sriov related */ for (i = 0; i <= PCI_ROM_RESOURCE; i++) |
