Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 4.8 16/35] PCI: Export pcie_find_root_port | Date | Wed, 7 Dec 2016 08:08:32 +0100 |
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4.8-stable review patch. If anyone has any objections, please let me know.
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From: Johannes Thumshirn <jthumshirn@suse.de>
commit e784930bd645e7df78c66e7872fec282b0620075 upstream.
Export pcie_find_root_port() so we can use it outside of PCIe-AER error injection.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- drivers/pci/pcie/aer/aer_inject.c | 14 -------------- include/linux/pci.h | 14 ++++++++++++++ 2 files changed, 14 insertions(+), 14 deletions(-)
--- a/drivers/pci/pcie/aer/aer_inject.c +++ b/drivers/pci/pcie/aer/aer_inject.c @@ -307,20 +307,6 @@ out: return 0; } -static struct pci_dev *pcie_find_root_port(struct pci_dev *dev) -{ - while (1) { - if (!pci_is_pcie(dev)) - break; - if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) - return dev; - if (!dev->bus->self) - break; - dev = dev->bus->self; - } - return NULL; -} - static int find_aer_device_iter(struct device *device, void *data) { struct pcie_device **result = data; --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1896,6 +1896,20 @@ static inline int pci_pcie_type(const st return (pcie_caps_reg(dev) & PCI_EXP_FLAGS_TYPE) >> 4; } +static inline struct pci_dev *pcie_find_root_port(struct pci_dev *dev) +{ + while (1) { + if (!pci_is_pcie(dev)) + break; + if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) + return dev; + if (!dev->bus->self) + break; + dev = dev->bus->self; + } + return NULL; +} + void pci_request_acs(void); bool pci_acs_enabled(struct pci_dev *pdev, u16 acs_flags); bool pci_acs_path_enabled(struct pci_dev *start,
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