From c73e787a8db9117d59b5180baf83203a42ecadca Mon Sep 17 00:00:00 2001
From: Ben Hutchings <bhutchings@solarflare.com>
Date: Tue, 5 Mar 2013 17:49:39 +0000
Subject: [PATCH] sfc: Correct efx_rx_buffer::page_offset when
 EFX_PAGE_IP_ALIGN != 0

RX DMA buffers start at an offset of EFX_PAGE_IP_ALIGN bytes from the
start of a cache line.  This offset obviously needs to be included in
the virtual address, but this was missed in commit b590ace09d51
('sfc: Fix efx_rx_buf_offset() in the presence of swiotlb') since
EFX_PAGE_IP_ALIGN is equal to 0 on both x86 and powerpc.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
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