On Tue, Jan 13, 2026 at 11:37:12AM +0900, Koichiro Den wrote:

The DesignWare EP midlayer needs to advertise additional capabilities at
the DWC layer (e.g. subrange_mapping) without duplicating the same bit
in every DWC-based glue driver and without copying feature structures.

Change dw_pcie_ep_ops.get_features() to return a mutable
struct pci_epc_features * and update all DWC-based glue drivers
accordingly. The DWC midlayer can then adjust/augment the returned
features while still exposing a const struct pci_epc_features * to the
PCI EPC core.

No functional change on its own.

Suggested-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Koichiro Den <redacted>
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Reviewed-by: Niklas Cassel <cassel@kernel.org>