From: Dongdong Zhang <zhangdongdong@xxxxxxxxxxxxxxxxxx>
Removed the duplicate macro `PCI_VSEC_HDR` and its related macro
`PCI_VSEC_HDR_LEN_SHIFT` from `pci_regs.h` to avoid redundancy and
inconsistencies. Updated VFIO PCI code to use `PCI_VNDR_HEADER` and
`PCI_VNDR_HEADER_LEN()` for consistent naming and functionality.
These changes aim to streamline header handling while minimizing
impact, given the niche usage of these macros in userspace.
Signed-off-by: Dongdong Zhang <zhangdongdong@xxxxxxxxxxxxxxxxxx>
---
drivers/vfio/pci/vfio_pci_config.c | 5 +++--
include/uapi/linux/pci_regs.h | 3 ---
2 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c
index ea2745c1ac5e..5572fd99b921 100644
--- a/drivers/vfio/pci/vfio_pci_config.c
+++ b/drivers/vfio/pci/vfio_pci_config.c
@@ -1389,11 +1389,12 @@ static int vfio_ext_cap_len(struct vfio_pci_core_device *vdev, u16 ecap, u16 epo
switch (ecap) {
case PCI_EXT_CAP_ID_VNDR:
- ret = pci_read_config_dword(pdev, epos + PCI_VSEC_HDR, &dword);
+ ret = pci_read_config_dword(pdev, epos + PCI_VNDR_HEADER,
+ &dword);
if (ret)
return pcibios_err_to_errno(ret);
- return dword >> PCI_VSEC_HDR_LEN_SHIFT;
+ return PCI_VNDR_HEADER_LEN(dword);
case PCI_EXT_CAP_ID_VC:
case PCI_EXT_CAP_ID_VC9:
case PCI_EXT_CAP_ID_MFVC:
diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
index 1601c7ed5fab..bcd44c7ca048 100644
--- a/include/uapi/linux/pci_regs.h
+++ b/include/uapi/linux/pci_regs.h
@@ -1001,9 +1001,6 @@
#define PCI_ACS_CTRL 0x06 /* ACS Control Register */
#define PCI_ACS_EGRESS_CTL_V 0x08 /* ACS Egress Control Vector */
-#define PCI_VSEC_HDR 4 /* extended cap - vendor-specific */
-#define PCI_VSEC_HDR_LEN_SHIFT 20 /* shift for length field */
-
/* SATA capability */
#define PCI_SATA_REGS 4 /* SATA REGs specifier */
#define PCI_SATA_REGS_MASK 0xF /* location - BAR#/inline */
--
2.17.1
