tree 6d0733fa5f58aead4d68ffbdd846038cbd306ff1
parent bc05aa6e13a717e1abff6f863f7ba82b14556df4
author Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 1512400141 +0100
committer Rich Felker <dalias@libc.org> 1523576873 -0400

arch/sh: make the DMA mapping operations observe dev->dma_pfn_offset

Some devices may have a non-zero DMA offset, i.e an offset between the
DMA address and the physical address. Such an offset can be encoded
into the dma_pfn_offset field of "struct device", but the SuperH
implementation of the DMA mapping API does not observe this
information.

This commit fixes that by ensuring the DMA address is properly
calculated depending on this DMA offset.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Rich Felker <dalias@libc.org>