1 files changed, 21 insertions, 20 deletions

diff --git a/MdePkg/Include/Library/UefiLib.h b/MdePkg/Include/Library/UefiLib.h
index a302c26beb..ef10f136b4 100644
--- a/MdePkg/Include/Library/UefiLib.h
+++ b/MdePkg/Include/Library/UefiLib.h
@@ -254,24 +254,26 @@ EfiReleaseLock (
   );

 

 /**
-  Tests whether a controller is managed by a specific driver.
+  Tests whether a controller handle is being managed by a specific driver.
 
-  This function tests whether a specific driver manages ControllerHandle by

-  opening on DriverBindingHandle a protocol specified by ProtocolGuid with

-  attribute EFI_OPEN_PROTOCOL_BY_DRIVER.  This library function is used to

-  implement the Component Name Protocol for EFI Drivers.

+  This function tests whether the driver specified by DriverBindingHandle is

+  currently managing the controller specified by ControllerHandle.  This test

+  is performed by evaluating if the the protocol specified by ProtocolGuid is

+  present on ControllerHandle and is was opened by DriverBindingHandle with an

+  attribute of EFI_OPEN_PROTOCOL_BY_DRIVER. 

   If ProtocolGuid is NULL, then ASSERT().

 
   @param  ControllerHandle     A handle for a controller to test.
   @param  DriverBindingHandle  Specifies the driver binding handle for the
                                driver.
-  @param  ProtocolGuid         Supplies GUID for the protocol opened by the
-                               driver on the controller. 
+  @param  ProtocolGuid         Specifies the protocol that the driver specified
+                               by DriverBindingHandle opens in its Start()
+                               function.
 
-  @retval EFI_SUCCESS          ControllerHandle is managed by the specific
-                               driver.
-  @retval EFI_UNSUPPORTED      ControllerHandle is not managed by the specific
-                               driver.
+  @retval EFI_SUCCESS          ControllerHandle is managed by the driver
+                               specifed by DriverBindingHandle.
+  @retval EFI_UNSUPPORTED      ControllerHandle is not managed by the driver
+                               specifed by DriverBindingHandle.
 
 **/

 EFI_STATUS

@@ -283,19 +285,18 @@ EfiTestManagedDevice (
   );

 

 /**
-  Tests whether a child handle is a children device of the controller.
+  Tests whether a child handle is a child device of the controller.
 
-  This function tests whether ChildHandle is one of the children of
-  ControllerHandle which are consuming a protocol specified by ProtocolGuid
-  with the attribute bit EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER set.  This
-  library function is used to implement the Component Name Protocol for EFI
-  Drivers.
-  If ProtocolGuid is NULL, then ASSERT().
+  This function tests whether ChildHandle is one of the children of

+  ControllerHandle.  This test is performed by checking to see if the protocol

+  specified by ProtocolGuid is present on ControllerHandle and opened by

+  ChildHandle with an attribute of EFI_OPEN_PROTOCOL_BY_CHILD_CONTROLLER.

+  If ProtocolGuid is NULL, then ASSERT().

 
   @param  ControllerHandle     A handle for a (parent) controller to test. 
   @param  ChildHandle          A child handle to test.
-  @param  ConsumsedGuid        Supplies GUID for the protocol consumed by
-                               children from controller. 
+  @param  ConsumsedGuid        Supplies the protocol that the child controller
+                               opens on its parent controller. 
 
   @retval EFI_SUCCESS          ChildHandle is a child of the ControllerHandle.
   @retval EFI_UNSUPPORTED      ChildHandle is not a child of the