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From: Laszlo Ersek <lersek@redhat.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>, edk2-devel@ml01.01.org
Cc: leif.lindholm@linaro.org
Subject: Re: [PATCH] ArmPlatformPkg/NorFlashDxe: eliminate void pointer arithmetic
Date: Mon, 24 Oct 2016 15:05:04 +0200	[thread overview]
Message-ID: <d04a7f46-1fe8-d748-22f7-6dbd8312b72b@redhat.com> (raw)
In-Reply-To: <1477314075-18874-1-git-send-email-ard.biesheuvel@linaro.org>

On 10/24/16 15:01, Ard Biesheuvel wrote:
> While most compilers happily allow arithmetic on void pointer,
> the RVCT compiler does not, and throws the following warning for
> NorFlashDxe:
> 
>   ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.c(894,48) :
>   error  #1254-D: arithmetic on pointer to void or function type
> 
> Since the expression in question involves a cast from UINTN to VOID*,
> simply add some parentheses to eliminate this warning.
> 
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> ---
>  ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.c b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.c
> index ca61ac5e1983..1098d9501cc7 100644
> --- a/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.c
> +++ b/ArmPlatformPkg/Drivers/NorFlashDxe/NorFlashDxe.c
> @@ -891,7 +891,7 @@ NorFlashRead (
>    SEND_NOR_COMMAND (Instance->DeviceBaseAddress, 0, P30_CMD_READ_ARRAY);
>  
>    // Readout the data
> -  AlignedCopyMem (Buffer, (VOID *)StartAddress + Offset, BufferSizeInBytes);
> +  AlignedCopyMem (Buffer, (VOID *)(StartAddress + Offset), BufferSizeInBytes);
>  
>    return EFI_SUCCESS;
>  }
> 

Reviewed-by: Laszlo Ersek <lersek@redhat.com>


  reply	other threads:[~2016-10-24 13:05 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-24 13:01 [PATCH] ArmPlatformPkg/NorFlashDxe: eliminate void pointer arithmetic Ard Biesheuvel
2016-10-24 13:05 ` Laszlo Ersek [this message]
2016-10-24 15:36   ` Ryan Harkin
2016-10-24 16:25     ` Ard Biesheuvel

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