[PATCH v2 7/9] cxl/pci: Use pci core's DVSEC functionality
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STALE1848d
From: Ben Widawsky <hidden>
Date: 2021-09-23 17:33:18
Also in:
linux-cxl, linux-iommu, linux-pci
Subsystem:
compute express link (cxl), the rest · Maintainers:
Davidlohr Bueso, Jonathan Cameron, Dave Jiang, Alison Schofield, Vishal Verma, Dan Williams, Linus Torvalds
Revision v2 of 2 in this series.
Revisions (2)
- v1 [diff vs current]
- v2 current
Reduce maintenance burden of DVSEC query implementation by using the centralized PCI core implementation. Signed-off-by: Ben Widawsky <redacted> --- drivers/cxl/pci.c | 20 +------------------- 1 file changed, 1 insertion(+), 19 deletions(-)
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 5eaf2736f779..79d4d9b16d83 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c@@ -340,25 +340,7 @@ static void cxl_pci_unmap_regblock(struct cxl_mem *cxlm, struct cxl_register_map static int cxl_pci_dvsec(struct pci_dev *pdev, int dvsec) { - int pos; - - pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DVSEC); - if (!pos) - return 0; - - while (pos) { - u16 vendor, id; - - pci_read_config_word(pdev, pos + PCI_DVSEC_HEADER1, &vendor); - pci_read_config_word(pdev, pos + PCI_DVSEC_HEADER2, &id); - if (vendor == PCI_DVSEC_VENDOR_ID_CXL && dvsec == id) - return pos; - - pos = pci_find_next_ext_capability(pdev, pos, - PCI_EXT_CAP_ID_DVSEC); - } - - return 0; + return pci_find_dvsec_capability(pdev, PCI_DVSEC_VENDOR_ID_CXL, dvsec); } static int cxl_probe_regs(struct cxl_mem *cxlm, struct cxl_register_map *map)
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2.33.0