# \[PATCH 7/7\] ocxl: Use pci core's DVSEC functionality

- From: Ben Widawsky \<hidden\>
- Date: 2021-09-21 22:32:00 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/09/9524461
- Thread: https://ratatoskr.run/linux-cxl/2021/09/13360531/t.md

```text
Reduce maintenance burden of DVSEC query implementation by using the
centralized PCI core implementation.

Cc: <redacted>
Cc: Frederic Barrat <redacted>
Cc: Andrew Donnellan <redacted>
Signed-off-by: Ben Widawsky <redacted>
---
 drivers/misc/ocxl/config.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/misc/ocxl/config.c b/drivers/misc/ocxl/config.c
index a68738f38252..e401a51596b9 100644
--- a/drivers/misc/ocxl/config.c
+++ b/drivers/misc/ocxl/config.c
@@ -33,18 +33,7 @@
 
 static int find_dvsec(struct pci_dev *dev, int dvsec_id)
 {
-	int vsec = 0;
-	u16 vendor, id;
-
-	while ((vsec = pci_find_next_ext_capability(dev, vsec,
-						    OCXL_EXT_CAP_ID_DVSEC))) {
-		pci_read_config_word(dev, vsec + OCXL_DVSEC_VENDOR_OFFSET,
-				&vendor);
-		pci_read_config_word(dev, vsec + OCXL_DVSEC_ID_OFFSET, &id);
-		if (vendor == PCI_VENDOR_ID_IBM && id == dvsec_id)
-			return vsec;
-	}
-	return 0;
+	return pci_find_dvsec_capability(dev, PCI_VENDOR_ID_IBM, dvsec_id);
 }
 
 static int find_dvsec_afu_ctrl(struct pci_dev *dev, u8 afu_idx)
-- 
2.33.0

```