Unverified Commit 8607d9c1 authored by Xiongfeng Wang's avatar Xiongfeng Wang Committed by Xu Yilun
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fpga: dfl-pci: Use pci_find_vsec_capability() to simplify the code 



PCI core add pci_find_vsec_capability() to query VSEC. We can use that
core API to simplify the code.

Signed-off-by: default avatarXiongfeng Wang <wangxiongfeng2@huawei.com>
Acked-by: default avatarXu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20230802080726.178194-1-wangxiongfeng2@huawei.com


Signed-off-by: default avatarXu Yilun <yilun.xu@intel.com>
parent 3969f645

drivers/fpga/dfl-pci.c

+4 −11
Original line number Diff line number Diff line
@@ -156,19 +156,12 @@ static int *cci_pci_create_irq_table(struct pci_dev *pcidev, unsigned int nvec) 


static int find_dfls_by_vsec(struct pci_dev *pcidev, struct dfl_fpga_enum_info *info)

{

	u32 bir, offset, vndr_hdr, dfl_cnt, dfl_res;

	int dfl_res_off, i, bars, voff = 0;

	u32 bir, offset, dfl_cnt, dfl_res;

	int dfl_res_off, i, bars, voff;

	resource_size_t start, len;



	while ((voff = pci_find_next_ext_capability(pcidev, voff, PCI_EXT_CAP_ID_VNDR))) {

		vndr_hdr = 0;

		pci_read_config_dword(pcidev, voff + PCI_VNDR_HEADER, &vndr_hdr);



		if (PCI_VNDR_HEADER_ID(vndr_hdr) == PCI_VSEC_ID_INTEL_DFLS &&

		    pcidev->vendor == PCI_VENDOR_ID_INTEL)

			break;

	}



	voff = pci_find_vsec_capability(pcidev, PCI_VENDOR_ID_INTEL,

					PCI_VSEC_ID_INTEL_DFLS);

	if (!voff) {

		dev_dbg(&pcidev->dev, "%s no DFL VSEC found\n", __func__);

		return -ENODEV;