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fpga: dfl-pci: Use pci_find_vsec_capability() to simplify the code

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

Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20230802080726.178194-1-wangxiongfeng2@huawei.com
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
This commit is contained in:
Xiongfeng Wang
2023-08-02 16:07:26 +08:00
committed by Xu Yilun
parent 3969f6458f
commit 8607d9c1bd
1 changed files with 4 additions and 11 deletions
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15
drivers/fpga/dfl-pci.c
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@@ -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) 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; u32 bir, offset, dfl_cnt, dfl_res;
int dfl_res_off, i, bars, voff = 0; int dfl_res_off, i, bars, voff;
resource_size_t start, len; resource_size_t start, len;
while ((voff = pci_find_next_ext_capability(pcidev, voff, PCI_EXT_CAP_ID_VNDR))) { voff = pci_find_vsec_capability(pcidev, PCI_VENDOR_ID_INTEL,
vndr_hdr = 0; PCI_VSEC_ID_INTEL_DFLS);
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;
}
if (!voff) { if (!voff) {
dev_dbg(&pcidev->dev, "%s no DFL VSEC found\n", __func__); dev_dbg(&pcidev->dev, "%s no DFL VSEC found\n", __func__);
return -ENODEV; return -ENODEV;