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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-23 19:31:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-23 19:31:34 -0700 |
| commit | 3a2c5dad6c4d4551effba477f4f45fa5feb1293f (patch) | |
| tree | 1e1f1ab67279c46c3e6aed1c4041880f58ec5dae /drivers/pci/pci.c | |
| parent | 2242d5eff17cf91110a3c44747f9f2e1a938cbda (diff) | |
| parent | a491913ff22c2b69d937d14296db6fa34dbff068 (diff) | |
| download | op-kernel-dev-3a2c5dad6c4d4551effba477f4f45fa5feb1293f.zip op-kernel-dev-3a2c5dad6c4d4551effba477f4f45fa5feb1293f.tar.gz | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
PCI: remove unused resource assignment in pci_read_bridge_bases()
PCI hotplug: shpchp: message refinement
PCI hotplug: shpchp: replace printk with dev_printk
PCI: add routines for debugging and handling lost interrupts
PCI hotplug: pciehp: message refinement
PCI: fix ARI code to be compatible with mixed ARI/non-ARI systems
PCI hotplug: cpqphp: fix kernel NULL pointer dereference
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 533aeb5..21f2ac6 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1309,27 +1309,32 @@ void pci_enable_ari(struct pci_dev *dev) int pos; u32 cap; u16 ctrl; + struct pci_dev *bridge; - if (!dev->is_pcie) + if (!dev->is_pcie || dev->devfn) return; - if (dev->pcie_type != PCI_EXP_TYPE_ROOT_PORT && - dev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM) + pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ARI); + if (!pos) return; - pos = pci_find_capability(dev, PCI_CAP_ID_EXP); + bridge = dev->bus->self; + if (!bridge || !bridge->is_pcie) + return; + + pos = pci_find_capability(bridge, PCI_CAP_ID_EXP); if (!pos) return; - pci_read_config_dword(dev, pos + PCI_EXP_DEVCAP2, &cap); + pci_read_config_dword(bridge, pos + PCI_EXP_DEVCAP2, &cap); if (!(cap & PCI_EXP_DEVCAP2_ARI)) return; - pci_read_config_word(dev, pos + PCI_EXP_DEVCTL2, &ctrl); + pci_read_config_word(bridge, pos + PCI_EXP_DEVCTL2, &ctrl); ctrl |= PCI_EXP_DEVCTL2_ARI; - pci_write_config_word(dev, pos + PCI_EXP_DEVCTL2, ctrl); + pci_write_config_word(bridge, pos + PCI_EXP_DEVCTL2, ctrl); - dev->ari_enabled = 1; + bridge->ari_enabled = 1; } int |
