diff --git a/Source/Core/InputCommon/ControllerInterface/Android/Android.cpp b/Source/Core/InputCommon/ControllerInterface/Android/Android.cpp
index c60679daf0..b67974509b 100644
--- a/Source/Core/InputCommon/ControllerInterface/Android/Android.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/Android/Android.cpp
@@ -693,7 +693,7 @@ private:
         negative = new AndroidAxis(source, axis, true);
 
       if (positive && negative)
-        AddAnalogInputs(positive, negative);
+        AddFullAnalogSurfaceInputs(positive, negative);
       else if (positive || negative)
         AddInput(positive ? positive : negative);
     }
diff --git a/Source/Core/InputCommon/ControllerInterface/CoreDevice.cpp b/Source/Core/InputCommon/ControllerInterface/CoreDevice.cpp
index 8cf3e763e8..cfced12e80 100644
--- a/Source/Core/InputCommon/ControllerInterface/CoreDevice.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/CoreDevice.cpp
@@ -164,6 +164,14 @@ bool Device::FullAnalogSurface::IsMatchingName(std::string_view name) const
   return old_name == name;
 }
 
+void Device::AddFullAnalogSurfaceInputs(Input* low, Input* high)
+{
+  AddInput(low);
+  AddInput(high);
+  AddInput(new FullAnalogSurface(low, high));
+  AddInput(new FullAnalogSurface(high, low));
+}
+
 void Device::AddCombinedInput(std::string name, const std::pair<std::string, std::string>& inputs)
 {
   AddInput(new CombinedInput(std::move(name), {FindInput(inputs.first), FindInput(inputs.second)}));
diff --git a/Source/Core/InputCommon/ControllerInterface/CoreDevice.h b/Source/Core/InputCommon/ControllerInterface/CoreDevice.h
index 33a322861b..b34e6a9d15 100644
--- a/Source/Core/InputCommon/ControllerInterface/CoreDevice.h
+++ b/Source/Core/InputCommon/ControllerInterface/CoreDevice.h
@@ -178,13 +178,14 @@ protected:
     Input& m_high;
   };
 
-  void AddAnalogInputs(Input* low, Input* high)
-  {
-    AddInput(low);
-    AddInput(high);
-    AddInput(new FullAnalogSurface(low, high));
-    AddInput(new FullAnalogSurface(high, low));
-  }
+  // Pass Inputs for center-neutral (- and +) directions of some axis.
+  // This function adds those Inputs and also a FullAnalogSurface Input for each direction.
+  // This is only needed when it's not known if the particular axis is neutral in the center
+  //  or neutral on one of the extremes.
+  // Some e.g. DInput devices expose a trigger across the full analog surface
+  //  but we have no way of knowing this until the user actually maps the Input,
+  //  so both center-neutral and full-surface Inputs need to be created in that case.
+  void AddFullAnalogSurfaceInputs(Input* low, Input* high);
 
   void AddCombinedInput(std::string name, const std::pair<std::string, std::string>& inputs);
 
diff --git a/Source/Core/InputCommon/ControllerInterface/DInput/DInputJoystick.cpp b/Source/Core/InputCommon/ControllerInterface/DInput/DInputJoystick.cpp
index a78c310f24..95cacc6da7 100644
--- a/Source/Core/InputCommon/ControllerInterface/DInput/DInputJoystick.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/DInput/DInputJoystick.cpp
@@ -167,8 +167,8 @@ Joystick::Joystick(const LPDIRECTINPUTDEVICE8 device) : m_device(device)
       const LONG& ax = (&m_state_in.lX)[offset];
 
       // each axis gets a negative and a positive input instance associated with it
-      AddAnalogInputs(new Axis(offset, ax, base, range.lMin - base),
-                      new Axis(offset, ax, base, range.lMax - base));
+      AddFullAnalogSurfaceInputs(new Axis(offset, ax, base, range.lMin - base),
+                                 new Axis(offset, ax, base, range.lMax - base));
     }
   }
 
diff --git a/Source/Core/InputCommon/ControllerInterface/Pipes/Pipes.cpp b/Source/Core/InputCommon/ControllerInterface/Pipes/Pipes.cpp
index 1a2052089e..50175ebaf7 100644
--- a/Source/Core/InputCommon/ControllerInterface/Pipes/Pipes.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/Pipes/Pipes.cpp
@@ -129,7 +129,7 @@ void PipeDevice::AddAxis(const std::string& name, double value)
   ax_lo->SetState(value);
   m_axes[name + " +"] = ax_hi;
   m_axes[name + " -"] = ax_lo;
-  AddAnalogInputs(ax_lo, ax_hi);
+  AddFullAnalogSurfaceInputs(ax_lo, ax_hi);
 }
 
 void PipeDevice::SetAxis(const std::string& entry, double value)
diff --git a/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp b/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp
index 324619c927..6a86217190 100644
--- a/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/SDL/SDL.cpp
@@ -710,8 +710,8 @@ GameController::GameController(SDL_GameController* const gamecontroller,
     const bool is_registered = registered_axes.contains(i);
 
     // each axis gets a negative and a positive input instance associated with it
-    AddAnalogInputs(new LegacyAxis(m_joystick, i, -32768, is_registered),
-                    new LegacyAxis(m_joystick, i, 32767, is_registered));
+    AddFullAnalogSurfaceInputs(new LegacyAxis(m_joystick, i, -32768, is_registered),
+                               new LegacyAxis(m_joystick, i, 32767, is_registered));
   }
 
   // Hats
diff --git a/Source/Core/InputCommon/ControllerInterface/WGInput/WGInput.cpp b/Source/Core/InputCommon/ControllerInterface/WGInput/WGInput.cpp
index 2fa3fc2e77..a688ca0366 100644
--- a/Source/Core/InputCommon/ControllerInterface/WGInput/WGInput.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/WGInput/WGInput.cpp
@@ -125,9 +125,8 @@ public:
         u32 i = 0;
         for (auto& axis : m_axes)
         {
-          // AddAnalogInputs adds additional "FullAnalogSurface" Inputs.
-          AddAnalogInputs(new IndexedAxis(&axis, 0.5, +0.5, i),
-                          new IndexedAxis(&axis, 0.5, -0.5, i));
+          AddFullAnalogSurfaceInputs(new IndexedAxis(&axis, 0.5, +0.5, i),
+                                     new IndexedAxis(&axis, 0.5, -0.5, i));
           ++i;
         }
       }
diff --git a/Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp b/Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp
index e0ae924b83..bb51d0026e 100644
--- a/Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp
+++ b/Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp
@@ -572,7 +572,8 @@ bool evdevDevice::AddNode(std::string devnode, int fd, libevdev* dev)
   {
     if (libevdev_has_event_code(dev, EV_ABS, axis))
     {
-      AddAnalogInputs(new Axis(num_axis, axis, false, dev), new Axis(num_axis, axis, true, dev));
+      AddFullAnalogSurfaceInputs(new Axis(num_axis, axis, false, dev),
+                                 new Axis(num_axis, axis, true, dev));
       ++num_axis;
     }
   }