Re: [RFC PATCH 3/4] PCI/DOE: Add DOE mailbox support for endpoint functions

[Lukas Wunner]

On Fri, Feb 13, 2026 at 06:06:02PM +0530, Aksh Garg wrote:
> Add the DOE support for PCIe endpoint devices, enabling endpoint
> functions to process the DOE requests from the host. The implementation
> provides framework APIs for controller drivers to register mailboxes,
> protocol handler registration for different DOE data object types, and
> request processing with workqueues ensuring sequential handling per
> mailbox. The Discovery protocol is handled internally by the DOE core.

This looks like it is largely a duplication of drivers/pci/doe.c,
including the asynchronous request support that was originally added
but was never needed and so was clearly a mistake.

I'm wondering why the async suport is needed in the endpoint case?
Why can't this (only) be synchronous?

Thanks,

Lukas