Reviewed-by: Eric Dong <eric.d...@intel.com>

> -----Original Message-----
> From: edk2-devel [mailto:edk2-devel-boun...@lists.01.org] On Behalf Of Dandan 
> Bi
> Sent: Monday, February 20, 2017 1:06 PM
> To: edk2-devel@lists.01.org
> Cc: Dong, Eric; Gao, Liming
> Subject: [edk2] [patch] MdeModulePkg/BMMUiLib: Remove old useless data before 
> new save action
> 
> There exits the case that when saving changes in form A,
> the old saved data in form B are not cleaned, will be saved
> again with the new save. Thus incorrect UI behavior will be
> shown. This patch is to remove some useless data.
> 
> https://bugzilla.tianocore.org/show_bug.cgi?id=385
> 
> Cc: Eric Dong <eric.d...@intel.com>
> Cc: Liming Gao <liming....@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Dandan Bi <dandan...@intel.com>
> ---
>  .../BootMaintenanceManagerUiLib/BootMaintenance.c  | 35 
> +++++++++++++++++++++-
>  .../BootMaintenanceManager.h                       | 14 ++++++++-
>  2 files changed, 47 insertions(+), 2 deletions(-)
> 
> diff --git 
> a/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenance.c
> b/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenance.c
> index e49ab98..3ff23a5 100644
> --- a/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenance.c
> +++ b/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenance.c
> @@ -1,9 +1,9 @@
>  /** @file
>  The functions for Boot Maintainence Main menu.
> 
> -Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
> +Copyright (c) 2004 - 2017, Intel Corporation. All rights reserved.<BR>
>  This program and the accompanying materials
>  are licensed and made available under the terms and conditions of the BSD 
> License
>  which accompanies this distribution.  The full text of the license may be 
> found at
>  http://opensource.org/licenses/bsd-license.php
> 
> @@ -1212,13 +1212,15 @@ BootMaintCallback (
>      if ((Value == NULL) || (ActionRequest == NULL)) {
>        return EFI_INVALID_PARAMETER;
>      }
> 
>      if (QuestionId == KEY_VALUE_SAVE_AND_EXIT_BOOT) {
> +      CleanUselessBeforeSubmit (Private);
>        CurrentFakeNVMap->BootOptionChanged = FALSE;
>        *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_SUBMIT_EXIT;
>      } else if (QuestionId == KEY_VALUE_SAVE_AND_EXIT_DRIVER) {
> +      CleanUselessBeforeSubmit (Private);
>        CurrentFakeNVMap->DriverOptionChanged = FALSE;
>        *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_SUBMIT_EXIT;
>      } else if (QuestionId == KEY_VALUE_NO_SAVE_AND_EXIT_DRIVER) {
>        //
>        // Discard changes and exit formset
> @@ -1267,10 +1269,11 @@ BootMaintCallback (
>      } else {
>        switch (QuestionId) {
>        case KEY_VALUE_SAVE_AND_EXIT:
>        case KEY_VALUE_NO_SAVE_AND_EXIT:
>          if (QuestionId == KEY_VALUE_SAVE_AND_EXIT) {
> +          CleanUselessBeforeSubmit (Private);
>            *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_SUBMIT_EXIT;
>          } else if (QuestionId == KEY_VALUE_NO_SAVE_AND_EXIT) {
>            DiscardChangeHandler (Private, CurrentFakeNVMap);
>            *ActionRequest = EFI_BROWSER_ACTION_REQUEST_FORM_DISCARD_EXIT;
>          }
> @@ -1369,10 +1372,40 @@ DiscardChangeHandler (
>      break;
>    }
>  }
> 
>  /**
> +  This function is to clean some useless data before submit changes.
> +
> +  @param Private            The BMM context data.
> +
> +**/
> +VOID
> +CleanUselessBeforeSubmit (
> +  IN  BMM_CALLBACK_DATA               *Private
> +  )
> +{
> +  UINT16  Index;
> +  if (Private->BmmPreviousPageId != FORM_BOOT_DEL_ID) {
> +    for (Index = 0; Index < BootOptionMenu.MenuNumber; Index++) {
> +      if (Private->BmmFakeNvData.BootOptionDel[Index] && 
> !Private->BmmFakeNvData.BootOptionDelMark[Index]) {
> +        Private->BmmFakeNvData.BootOptionDel[Index] = FALSE;
> +        Private->BmmOldFakeNVData.BootOptionDel[Index] = FALSE;
> +      }
> +    }
> +  }
> +  if (Private->BmmPreviousPageId != FORM_DRV_DEL_ID) {
> +    for (Index = 0; Index < DriverOptionMenu.MenuNumber; Index++) {
> +      if (Private->BmmFakeNvData.DriverOptionDel[Index] && 
> !Private->BmmFakeNvData.DriverOptionDelMark[Index]) {
> +        Private->BmmFakeNvData.DriverOptionDel[Index] = FALSE;
> +        Private->BmmOldFakeNVData.DriverOptionDel[Index] = FALSE;
> +      }
> +    }
> +  }
> +}
> +
> +/**
> 
>    Update the menus in the BMM page.
> 
>  **/
>  VOID
> diff --git 
> a/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManager.h
> b/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManager.h
> index 0665c78..532b75b 100644
> --- 
> a/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManager.h
> +++ 
> b/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManager.h
> @@ -1,9 +1,9 @@
>  /** @file
>  Header file for boot maintenance module.
> 
> -Copyright (c) 2004 - 2016, Intel Corporation. All rights reserved.<BR>
> +Copyright (c) 2004 - 2017, Intel Corporation. All rights reserved.<BR>
>  This program and the accompanying materials
>  are licensed and made available under the terms and conditions of the BSD 
> License
>  which accompanies this distribution.  The full text of the license may be 
> found at
>  http://opensource.org/licenses/bsd-license.php
> 
> @@ -1047,10 +1047,22 @@ VOID
>  DiscardChangeHandler (
>    IN  BMM_CALLBACK_DATA               *Private,
>    IN  BMM_FAKE_NV_DATA                *CurrentFakeNVMap
>    );
> 
> +
> +/**
> +  This function is to clean some useless data before submit changes.
> +
> +  @param Private            The BMM context data.
> +
> +**/
> +VOID
> +CleanUselessBeforeSubmit (
> +  IN  BMM_CALLBACK_DATA               *Private
> +  );
> +
>  /**
>    Dispatch the display to the next page based on NewPageId.
> 
>    @param Private         The BMM context data.
>    @param NewPageId       The original page ID.
> --
> 1.9.5.msysgit.1
> 
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