Re: [PATCH edk2-staging 12/20] IntelUndiPkg/XGigUndiDxe: don't take address of cast expression

[Ryszard Knop <ryszard.knop@linux.intel.com>]

Reviewed-by: Ryszard Knop <ryszard.knop@linux.intel.com>

On Wed, 2018-11-14 at 18:33 -0800, ard.biesheuvela wrote:
> Taking the address of a cast expression is not permitted in C.
> Instead,
> take the address of the variable, and cast the pointer to the desired
> pointer type.
> 
> Contributed-under: TianoCore Contribution Agreement 1.1
> Signed-off-by: Ard Biesheuvel <ard.biesheuvel at linaro.org>
> ---
>  IntelUndiPkg/XGigUndiDxe/Xgbe.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/IntelUndiPkg/XGigUndiDxe/Xgbe.c
> b/IntelUndiPkg/XGigUndiDxe/Xgbe.c
> index 0c823efe8963..003c3b9065ec 100644
> --- a/IntelUndiPkg/XGigUndiDxe/Xgbe.c
> +++ b/IntelUndiPkg/XGigUndiDxe/Xgbe.c
> @@ -1264,7 +1264,7 @@ XgbeTxRxConfigure (
>    IXGBE_WRITE_REG (&XgbeAdapter->Hw, IXGBE_RDBAL (0), (UINT32)
> (UINTN) (XgbeAdapter->RxRing.PhysicalAddress));
>  
>    MemAddr = (UINT64) (UINTN) XgbeAdapter->RxRing.PhysicalAddress;
> -  MemPtr  = &((UINT32) MemAddr);
> +  MemPtr  = (UINT32 *) &MemAddr;
>    MemPtr++;
>    IXGBE_WRITE_REG (&XgbeAdapter->Hw, IXGBE_RDBAH (0), *MemPtr);
>    DEBUGPRINT (XGBE, ("Rdbal0 %X\n", (UINT32) IXGBE_READ_REG
> (&XgbeAdapter->Hw, IXGBE_RDBAL (0))));
> @@ -1337,7 +1337,7 @@ XgbeTxRxConfigure (
>    XgbeAdapter->XmitDoneHead = 0;  // the last cleaned buffer
>    IXGBE_WRITE_REG (&XgbeAdapter->Hw, IXGBE_TDBAL (0), (UINT32)
> (XgbeAdapter->TxRing.PhysicalAddress));
>    MemAddr = (UINT64) XgbeAdapter->TxRing.PhysicalAddress;
> -  MemPtr  = &((UINT32) MemAddr);
> +  MemPtr  = (UINT32 *) &MemAddr;
>    MemPtr++;
>    IXGBE_WRITE_REG (&XgbeAdapter->Hw, IXGBE_TDBAH (0), *MemPtr);
>    DEBUGPRINT (XGBE, ("TdBah0 %X\n", *MemPtr));