Re: [PATCH 1/8] ArmPlatformPkg/NorFlashDxe: correct NumOfLba vararg type in EraseBlocks()

[Ard Biesheuvel <ard.biesheuvel@linaro.org>]

On 18 May 2017 at 16:04, Laszlo Ersek <lersek@redhat.com> wrote:
> According to the PI spec, Volume 3,
> EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL.EraseBlocks():
>
>> The variable argument list is a list of tuples. Each tuple describes a
>> range of LBAs to erase and consists of the following:
>> * An EFI_LBA that indicates the starting LBA
>> * A UINTN that indicates the number of blocks to erase
>
> (NB, in edk2, EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL is a typedef to
> EFI_FIRMWARE_VOLUME_BLOCK2_PROTOCOL.)
>
> In this driver, the NumOfLba local variable is defined with type UINTN,
> but the TYPE argument passed to VA_ARG() is UINT32. Fix the mismatch.
>
> In addition, update the DEBUG macro invocation where NumOfLba is formatted
> with the %d conversion specifier: UINTN values should be converted to
> UINT64 and printed with %Lu or %Lx for portability between 32-bit and
> 64-bit.
>
> Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> Cc: Jordan Justen <jordan.l.justen@intel.com>
> Cc: Leif Lindholm <leif.lindholm@linaro.org>
> Reported-by: Jordan Justen <jordan.l.justen@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Laszlo Ersek <lersek@redhat.com>

Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

> ---
>  ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvbDxe.c | 12 +++++++++---
>  1 file changed, 9 insertions(+), 3 deletions(-)
>
> diff --git a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvbDxe.c b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvbDxe.c
> index 12a861267a86..3ea858f46ffb 100644
> --- a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvbDxe.c
> +++ b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashFvbDxe.c
> @@ -628,10 +628,16 @@ FvbEraseBlocks (
>      }
>
>      // How many Lba blocks are we requested to erase?
> -    NumOfLba = VA_ARG (Args, UINT32);
> +    NumOfLba = VA_ARG (Args, UINTN);
>
>      // All blocks must be within range
> -    DEBUG ((DEBUG_BLKIO, "FvbEraseBlocks: Check if: ( StartingLba=%ld + NumOfLba=%d - 1 ) > LastBlock=%ld.\n", Instance->StartLba + StartingLba, NumOfLba, Instance->Media.LastBlock));
> +    DEBUG ((
> +      DEBUG_BLKIO,
> +      "FvbEraseBlocks: Check if: ( StartingLba=%ld + NumOfLba=%Lu - 1 ) > LastBlock=%ld.\n",
> +      Instance->StartLba + StartingLba,
> +      (UINT64)NumOfLba,
> +      Instance->Media.LastBlock
> +      ));
>      if ((NumOfLba == 0) || ((Instance->StartLba + StartingLba + NumOfLba - 1) > Instance->Media.LastBlock)) {
>        VA_END (Args);
>        DEBUG ((EFI_D_ERROR, "FvbEraseBlocks: ERROR - Lba range goes past the last Lba.\n"));
> @@ -656,7 +662,7 @@ FvbEraseBlocks (
>      }
>
>      // How many Lba blocks are we requested to erase?
> -    NumOfLba = VA_ARG (Args, UINT32);
> +    NumOfLba = VA_ARG (Args, UINTN);
>
>      // Go through each one and erase it
>      while (NumOfLba > 0) {
> --
> 2.9.3
>
>