raise TPL to TPL_CALLBACK level at DriverBindingStart() for all usb-related modules, which prevent DriverBindingStop() from being invoked when DriverBindingStart() runs.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10460 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 7 insertions, 1 deletions

diff --git a/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c b/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c
index 8b8a21e..f51dbfa 100644
--- a/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c
+++ b/MdeModulePkg/Bus/Usb/UsbMouseDxe/UsbMouse.c
@@ -149,7 +149,9 @@ USBMouseDriverBindingStart (
   UINT8                       PollingInterval;

   UINT8                       PacketSize;

   BOOLEAN                     Found;

+  EFI_TPL                     OldTpl;

 

+  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);

   //

   // Open USB I/O Protocol

   //

@@ -162,7 +164,7 @@ USBMouseDriverBindingStart (
                   EFI_OPEN_PROTOCOL_BY_DRIVER

                   );

   if (EFI_ERROR (Status)) {

-    return Status;

+    goto ErrorExit1;

   }

 

   UsbMouseDevice = AllocateZeroPool (sizeof (USB_MOUSE_DEV));

@@ -324,6 +326,8 @@ USBMouseDriverBindingStart (
     FALSE

     );

 

+  gBS->RestoreTPL (OldTpl);

+

   return EFI_SUCCESS;

 

 //

@@ -348,6 +352,8 @@ ErrorExit:
     }

   }

 

+ErrorExit1:

+  gBS->RestoreTPL (OldTpl);

   return Status;

 }