PCI: dwc: ep: Remove superfluous function dw_pcie_ep_find_ext_capability()

Remove the superfluous function dw_pcie_ep_find_ext_capability(),
as it is virtually identical to dw_pcie_find_ext_capability().

Signed-off-by: Niklas Cassel <cassel@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20250221202646.395252-3-cassel@kernel.org
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index 72418160e65833a4d56fd6a2455cfd69b4c5240f..5729bf313a782ddab1987d806e9ba3dadcd185b8 100644 (file)
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -102,24 +102,6 @@ static u8 dw_pcie_ep_find_capability(struct dw_pcie_ep *ep, u8 func_no, u8 cap)
        return __dw_pcie_ep_find_next_cap(ep, func_no, next_cap_ptr, cap);
 }
 
-static unsigned int dw_pcie_ep_find_ext_capability(struct dw_pcie *pci, int cap)
-{
-       u32 header;
-       int pos = PCI_CFG_SPACE_SIZE;
-
-       while (pos) {
-               header = dw_pcie_readl_dbi(pci, pos);
-               if (PCI_EXT_CAP_ID(header) == cap)
-                       return pos;
-
-               pos = PCI_EXT_CAP_NEXT(header);
-               if (!pos)
-                       break;
-       }
-
-       return 0;
-}
-
 static int dw_pcie_ep_write_header(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
                                   struct pci_epf_header *hdr)
 {
@@ -230,7 +212,7 @@ static unsigned int dw_pcie_ep_get_rebar_offset(struct dw_pcie *pci,
        unsigned int offset, nbars;
        int i;
 
-       offset = dw_pcie_ep_find_ext_capability(pci, PCI_EXT_CAP_ID_REBAR);
+       offset = dw_pcie_find_ext_capability(pci, PCI_EXT_CAP_ID_REBAR);
        if (!offset)
                return offset;
 
@@ -846,7 +828,7 @@ static void dw_pcie_ep_init_non_sticky_registers(struct dw_pcie *pci)
        enum pci_barno bar;
        u32 reg, i, val;
 
-       offset = dw_pcie_ep_find_ext_capability(pci, PCI_EXT_CAP_ID_REBAR);
+       offset = dw_pcie_find_ext_capability(pci, PCI_EXT_CAP_ID_REBAR);
 
        dw_pcie_dbi_ro_wr_en(pci);
 
@@ -969,7 +951,7 @@ int dw_pcie_ep_init_registers(struct dw_pcie_ep *ep)
        if (ep->ops->init)
                ep->ops->init(ep);
 
-       ptm_cap_base = dw_pcie_ep_find_ext_capability(pci, PCI_EXT_CAP_ID_PTM);
+       ptm_cap_base = dw_pcie_find_ext_capability(pci, PCI_EXT_CAP_ID_PTM);
 
        /*
         * PTM responder capability can be disabled only after disabling