Red Bear OS 908628215d USB: real control_transfer in XhciAdapter — closes P2 zombie adapter gap
Cross-referenced with Linux 7.1 xhci-ring.c control transfer path.

scheme.rs:
- execute_control_transfer_once: private → pub(crate)
- ControlFlow enum: pub → pub(crate)

main.rs:
- usb module: mod → pub(crate)

mod.rs:
- New trait_control_transfer() bridge method on Xhci<N>
  Converts usb_core::SetupPacket → crate::usb::Setup
  Detects TransferKind (NoData/In/Out) from request_type bit 7
  Calls execute_control_transfer_once via block_on(async→sync)
  Returns transferred byte count

trait_adapter.rs:
- control_transfer() now calls hci.trait_control_transfer()
  with PortId from addr_map, mapping Err→UsbError::IoError
  Returns NoDevice if device_address not found in map

This closes the P2 architectural gap: the XhciAdapter now has
a real control_transfer implementation bridged to xhci's internal
control transfer engine.  The adapter is no longer a zombie — all
trait methods that need to work (name, port_count, port_status,
port_reset, set_address, control_transfer) are fully functional.
Bulk/interrupt remain Unsupported stubs (class drivers use scheme IPC).
2026-07-07 18:06:15 +03:00

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