linux-kernel - Re: [PATCH v6 2/5] PCI: dwc: Allow glue drivers to return mutable EPC features

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Message-ID: <aWYa_9mlWu-A2uCN@ryzen>
Date: Tue, 13 Jan 2026 11:14:23 +0100
From: Niklas Cassel <cassel@...nel.org>
To: Koichiro Den <den@...inux.co.jp>
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Subject: Re: [PATCH v6 2/5] PCI: dwc: Allow glue drivers to return mutable
 EPC features

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@...nel.org>
> Signed-off-by: Koichiro Den <den@...inux.co.jp>
> ---

Reviewed-by: Niklas Cassel <cassel@...nel.org>