USB: hub driver disconnect resilience + over-current + port indicators
Cross-referenced with Linux 7.1 drivers/usb/core/hub.c:
- hub_port_connect_change(): over-current detection + power-cycling
- hub_power_on(): power-on settle delay
- hub_port_reset(): reset sequencing
- port_event(): indicator LED toggling
usbhubd main loop:
- All 4 .expect() calls in runtime loop → graceful error handling
(GetPortStatus, SetPortPower, SetPortReset — now log warn + continue)
- ensure_attached(): attach/detach .expect() → match with warn log
- Port index bounds: .unwrap() → match with None fallback
- 0 panic sites remaining in runtime loop
New features:
- Over-current detection: C_PORT_OVERCURRENT → log warn, clear flag,
power-cycle port (disconnect→power_off→delay→re-enumerate per Linux)
- Port indicator: SET_FEATURE(PORT_INDICATOR) on enabled+connected ports
for visual port status feedback
usb/hub.rs:
- HubPortFeature enum extended: PortEnable, PortSuspend, PortLowSpeed,
CPortEnable, CPortSuspend, PortIndicator (matches Linux 7.1 ch11.h)
- HubPortStatus::is_over_current_changed() method added
Red Bear OS
fb9b158e66