[PATCH v2 9/9] iommu/vt-d: Use pci core's DVSEC functionality
From: Ben Widawsky <hidden>
Date: 2021-09-23 17:34:13
Also in:
linux-cxl, linux-iommu, linux-pci
Subsystem:
intel iommu (vt-d), iommu subsystem, the rest · Maintainers:
David Woodhouse, Lu Baolu, Joerg Roedel, Will Deacon, Linus Torvalds
Reduce maintenance burden of DVSEC query implementation by using the centralized PCI core implementation. Cc: iommu@lists.linux-foundation.org Cc: David Woodhouse <dwmw2@infradead.org> Cc: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Ben Widawsky <redacted> --- drivers/iommu/intel/iommu.c | 15 +-------------- 1 file changed, 1 insertion(+), 14 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index d75f59ae28e6..30c97181f0ae 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c@@ -5398,20 +5398,7 @@ static int intel_iommu_disable_sva(struct device *dev) */ static int siov_find_pci_dvsec(struct pci_dev *pdev) { - int pos; - u16 vendor, id; - - pos = pci_find_next_ext_capability(pdev, 0, 0x23); - while (pos) { - pci_read_config_word(pdev, pos + 4, &vendor); - pci_read_config_word(pdev, pos + 8, &id); - if (vendor == PCI_VENDOR_ID_INTEL && id == 5) - return pos; - - pos = pci_find_next_ext_capability(pdev, pos, 0x23); - } - - return 0; + return pci_find_dvsec_capability(pdev, PCI_VENDOR_ID_INTEL, 5); } static bool
--
2.33.0