Per UEFI spec, FORM_OPEN/FORM_CLOSE Callback function should be called for each question in the form when this form opens or closes.

Update SetupBrowser driver to call Callback function (FORM_OPEN/FORM_CLOSE) based on UEFI spec, and update all EDKII HII drivers to correctly handle FORM_OPEN and FORM_CLOSE call back. 


git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10560 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/Network/IScsiDxe/IScsiConfig.c

@@ -562,6 +562,13 @@ IScsiFormCallback (
   EFI_STATUS                Status;
   EFI_INPUT_KEY             Key;
 
+  if ((Action == EFI_BROWSER_ACTION_FORM_OPEN) || (Action == EFI_BROWSER_ACTION_FORM_CLOSE)) {
+    //
+    // Do nothing for UEFI OPEN/CLOSE Action
+    //
+    return EFI_SUCCESS;
+  }
+
   Private   = ISCSI_FORM_CALLBACK_INFO_FROM_FORM_CALLBACK (This);
 
   //