fix(core/bootloader): close booloader BLE pairing mode dialog on disconnect

[no changelog]

core/embed/io/ble/inc/io/ble.h

@@ -142,6 +142,9 @@ bool ble_issue_command(ble_command_t *command);
 // available.
 bool ble_get_event(ble_event_t *event);
 
+// Flushes the BLE event queue
+void ble_event_flush(void);
+
 // Retrieves the current state of the BLE module
 //
 // Obtains the current operational state of the BLE module.

core/embed/io/ble/stm32/ble.c

@@ -712,6 +712,20 @@ bool ble_get_event(ble_event_t *event) {
   return result;
 }
 
+void ble_event_flush(void) {
+  ble_driver_t *drv = &g_ble_driver;
+
+  if (!drv->initialized) {
+    return;
+  }
+
+  irq_key_t key = irq_lock();
+
+  tsqueue_reset(&drv->event_queue);
+
+  irq_unlock(key);
+}
+
 void ble_get_state(ble_state_t *state) {
   const ble_driver_t *drv = &g_ble_driver;
 

core/embed/projects/bootloader/wire/wire_iface_ble.c

@@ -179,6 +179,8 @@ bool ble_iface_start_pairing(void) {
     return false;
   }
 
+  ble_event_flush();
+
   ble_command_t cmd = {
       .cmd_type = BLE_PAIRING_MODE,
       .data = {.adv_start =

core/embed/rust/src/ui/layout_bolt/component/pairing_mode.rs

@@ -74,6 +74,9 @@ impl Component for PairingMode {
         if let Event::BLE(BLEEvent::PairingCanceled) = event {
             return Some(PairingMsg::Cancel);
         }
+        if let Event::BLE(BLEEvent::Disconnected) = event {
+            return Some(PairingMsg::Cancel);
+        }
 
         None
     }

core/embed/rust/src/ui/layout_eckhart/bootloader/pairing_mode.rs

@@ -74,6 +74,9 @@ impl Component for PairingModeScreen {
         if let Event::BLE(BLEEvent::PairingCanceled) = event {
             return Some(PairingMsg::Cancel);
         }
+        if let Event::BLE(BLEEvent::Disconnected) = event {
+            return Some(PairingMsg::Cancel);
+        }
 
         None
     }