Small refactor of is_device_* functions.

comfy/model_management.py

@@ -684,17 +684,20 @@ def mps_mode():
     global cpu_state
     return cpu_state == CPUState.MPS
 
-def is_device_cpu(device):
+def is_device_type(device, type):
     if hasattr(device, 'type'):
-        if (device.type == 'cpu'):
+        if (device.type == type):
             return True
     return False
 
+def is_device_cpu(device):
+    return is_device_type(device, 'cpu')
+
 def is_device_mps(device):
-    if hasattr(device, 'type'):
-        if (device.type == 'mps'):
-            return True
-    return False
+    return is_device_type(device, 'mps')
+
+def is_device_cuda(device):
+    return is_device_type(device, 'cuda')
 
 def should_use_fp16(device=None, model_params=0, prioritize_performance=True, manual_cast=False):
     global directml_enabled