[PATCH] arc_emac: fix compile-time errors & warnings on PPC64

[David Miller]

From: Alexey Brodkin <Alexey.Brodkin at synopsys.com>
Date: Wed, 26 Jun 2013 11:49:26 +0400

> As reported by "kbuild test robot" there were some errors and warnings
> on attempt to build kernel with "make ARCH=powerpc allmodconfig".
> 
> And this patch addresses both errors and warnings.
> Below is a list of introduced changes:
> 1. Fix compile-time errors (misspellings in "dma_unmap_single") on PPC.
> 2. Use DMA address instead of "skb->data" as a pointer to data buffer.
> This fixed warnings on pointer to int conversion on 64-bit systems.
> 3. Re-implemented initial allocation of Rx buffers in "arc_emac_open" in
> the same way they're re-allocated during operation (receiving packets).
> So once again DMA address could be used instead of "skb->data".
> 4. Explicitly use EMAC_BUFFER_SIZE for Rx buffers allocation.
> 
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>

Applied.