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_flags_reg instead of another access PCI-E Capabilities Register. Signed-off-by: Yijing Wang <wangyijing@xxxxxxxxxx> --- drivers/vfio/pci/vfio_pci_config.c | 6 +----- 1 files changed, 1 insertions(+), 5 deletions(-) diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c index aeb00fc..afc6ca4 100644 --- a/drivers/vfio/pci/vfio_pci_config.c +++ b/drivers/vfio/pci/vfio_pci_config.c @@ -1017,13 +1017,9 @@ 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 ((pdev->pcie_flags_reg & PCI_EXP_FLAGS_VERS) == 1) return PCI_CAP_EXP_ENDPOINT_SIZEOF_V1; else return PCI_CAP_EXP_ENDPOINT_SIZEOF_V2; -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
