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Merge branch 'pci/portdrv'

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- Enable Bandwidth Notification only if port supports it (Stuart Hayes)

* pci/portdrv:
  PCI/portdrv: Enable Bandwidth Notification only if port supports it
This commit is contained in:
Bjorn Helgaas
2021-09-02 14:56:42 -05:00
parent 03816e7f78 00823dcbdd
commit 34627f4dcd
1 changed files with 7 additions and 2 deletions
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9
drivers/pci/pcie/portdrv_core.c
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@ -257,8 +257,13 @@ static int get_port_device_capability(struct pci_dev *dev)
services |= PCIE_PORT_SERVICE_DPC;
if (pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM ||
pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT)
services |= PCIE_PORT_SERVICE_BWNOTIF;
pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) {
u32 linkcap;
pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &linkcap);
if (linkcap & PCI_EXP_LNKCAP_LBNC)
services |= PCIE_PORT_SERVICE_BWNOTIF;
}
return services;
}