Merge upstream master into net descriptor-based ep_size branch

- Resolve .gitignore conflict: incorporate upstream's .worktrees entry and
  expand dependency path patterns to cover all tools/get_deps.py fetched dirs
  (lib/, tools/linkermap, tools/uf2, hw/mcu/*) instead of listing only a few

- Auto-merged upstream changes: build system cleanups, BSP updates,
  portability fixes, new boards (nrf54lm20dk, stm32h743_weact),
  fatfs relocation, and many other upstream improvements

- Net driver changes (ecm_rndis_device.c, ncm_device.c, net_device.h,
  usbd.h, usb_descriptors.c) retain our PR's descriptor-based ep_size
  approach as our branch takes precedence

Co-authored-by: HiFiPhile <[email protected]>

1 files changed, 16 insertions, 8 deletions

diff --git a/test/fuzz/dcd_fuzz.cc b/test/fuzz/dcd_fuzz.cc
index 7a5d51623..3e73f0acf 100644
--- a/test/fuzz/dcd_fuzz.cc
+++ b/test/fuzz/dcd_fuzz.cc
@@ -61,14 +61,22 @@ void dcd_int_handler(uint8_t rhport) {
 
   // Choose if we want to generate a signal based on the fuzzed data.
   if (_fuzz_data_provider->ConsumeBool()) {
-    dcd_event_bus_signal(
-        rhport,
-        // Choose a random event based on the fuzz data.
-        (dcd_eventid_t)_fuzz_data_provider->ConsumeIntegralInRange<uint8_t>(
-            DCD_EVENT_INVALID + 1, DCD_EVENT_COUNT - 1),
-        // Identify trigger as either an interrupt or a syncrhonous call
-        // depending on fuzz data.
-        _fuzz_data_provider->ConsumeBool());
+    // Only generate bus signal events that don't carry additional union data.
+    // DCD_EVENT_XFER_COMPLETE, DCD_EVENT_SOF, and DCD_EVENT_BUS_RESET need
+    // properly initialized union fields; USBD_EVENT_FUNC_CALL is internal only.
+    // Valid bus-signal-only events: UNPLUGGED(2), SUSPEND(4), RESUME(5).
+    static const dcd_eventid_t bus_signal_events[] = {
+        DCD_EVENT_UNPLUGGED, DCD_EVENT_SUSPEND, DCD_EVENT_RESUME};
+    uint8_t idx = _fuzz_data_provider->ConsumeIntegralInRange<uint8_t>(0, 2);
+    dcd_event_bus_signal(rhport, bus_signal_events[idx],
+                         _fuzz_data_provider->ConsumeBool());
+  }
+
+  // Optionally generate a BUS_RESET event with a valid speed value.
+  if (_fuzz_data_provider->ConsumeBool()) {
+    tusb_speed_t speed = (tusb_speed_t)_fuzz_data_provider->ConsumeIntegralInRange<uint8_t>(
+        TUSB_SPEED_FULL, TUSB_SPEED_HIGH);
+    dcd_event_bus_reset(rhport, speed, _fuzz_data_provider->ConsumeBool());
   }
 
   if (_fuzz_data_provider->ConsumeBool()) {