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Commit 140ff0a3 authored by Johannes Thumshirn's avatar Johannes Thumshirn Committed by Greg Kroah-Hartman
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PCI: Export pcie_find_root_port 



commit e784930bd645e7df78c66e7872fec282b0620075 upstream.

Export pcie_find_root_port() so we can use it outside of PCIe-AER error
injection.

Signed-off-by: default avatarJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent dfb704f9

drivers/pci/pcie/aer/aer_inject.c

+0 −14
Original line number Diff line number Diff line
@@ -283,20 +283,6 @@ 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;

include/linux/pci.h

+14 −0
Original line number Diff line number Diff line
@@ -1802,6 +1802,20 @@ static inline int pci_pcie_type(const struct pci_dev *dev) 
	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,