PCI/DOE: Provide synchronous API and use it internally

The DOE API only allows asynchronous exchanges and forces callers to
provide a completion callback.  Yet all existing callers only perform
synchronous exchanges.  Upcoming commits for CMA (Component Measurement
and Authentication, PCIe r6.0 sec 6.31) likewise require only
synchronous DOE exchanges.

Provide a synchronous pci_doe() API call which builds on the internal
asynchronous machinery.

Convert the internal pci_doe_discovery() to the new call.

The new API allows submission of const-declared requests, necessitating
the addition of a const qualifier in struct pci_doe_task.

Tested-by: Ira Weiny <[email protected]>
Signed-off-by: Lukas Wunner <[email protected]>
Reviewed-by: Ming Li <[email protected]>
Reviewed-by: Ira Weiny <[email protected]>
Reviewed-by: Davidlohr Bueso <[email protected]>
Reviewed-by: Dan Williams <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Acked-by: Bjorn Helgaas <[email protected]>
Link: https://lore.kernel.org/r/0f444206da9615c56301fbaff459c0f45d27f122.1678543498.git.lukas@wunner.de
Signed-off-by: Dan Williams <[email protected]>

0 files changed, 0 insertions, 0 deletions