From aa2cba51a0a85dfbd5be58239e59bc5e8b5fb7cf Mon Sep 17 00:00:00 2001 From: Yijing Wang Date: Mon, 15 Apr 2013 08:45:10 -0600 Subject: PCI/VFIO: use pcie_flags_reg instead of access PCI-E Capabilities Register Currently, we use pcie_flags_reg to cache PCI-E Capabilities Register, because PCI-E Capabilities Register bits are almost read-only. This patch use pcie_caps_reg() instead of another access PCI-E Capabilities Register. Signed-off-by: Yijing Wang Signed-off-by: Alex Williamson --- drivers/vfio/pci/vfio_pci_config.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) (limited to 'drivers/vfio/pci') diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c index 072fdac..0e83e8e 100644 --- a/drivers/vfio/pci/vfio_pci_config.c +++ b/drivers/vfio/pci/vfio_pci_config.c @@ -1037,13 +1037,9 @@ static int vfio_cap_len(struct vfio_pci_device *vdev, u8 cap, u8 pos) return byte; case PCI_CAP_ID_EXP: /* length based on version */ - ret = pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, &word); - if (ret) - return pcibios_err_to_errno(ret); - vdev->extended_caps = true; - if ((word & PCI_EXP_FLAGS_VERS) == 1) + if ((pcie_caps_reg(pdev) & PCI_EXP_FLAGS_VERS) == 1) return PCI_CAP_EXP_ENDPOINT_SIZEOF_V1; else return PCI_CAP_EXP_ENDPOINT_SIZEOF_V2; -- cgit v1.1