From: Thierry Reding <treding@nvidia.com>
Date: Mon, 25 Aug 2014 11:02:52 +0000 (+0200)
Subject: s390: Implement dma_{alloc,free}_attrs()
X-Git-Tag: fixes-against-v3.18-rc2~131^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=90114d65feea716eeae0ab51e92c95b140b2e6fc;p=pandora-kernel.git

s390: Implement dma_{alloc,free}_attrs()

The S390 architecture advertises support for HAVE_DMA_ATTRS when PCI is
enabled. Patches to unify some of the DMA API would like to rely on the
dma_alloc_attrs() and dma_free_attrs() functions to be provided when an
architecture supports DMA attributes.

Rename dma_alloc_coherent() and dma_free_coherent() to dma_alloc_attrs()
and dma_free_attrs() since they are functionally equivalent and alias
the former to the latter for compatibility.

For consistency with other architectures, also reuse the existing symbol
HAVE_DMA_ATTRS defined in arch/Kconfig instead of providing a duplicate.
Select it when PCI is enabled.

While at it, drop a redundant 'default n' from the PCI Kconfig symbol.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Acked-By: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
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