tree 07bb3b78fd2bbe3705fb040f6ad1f5da6b5a625c
parent 88c58f3b92bc7c26439802c300d39b6377739d81
author Russell King <rmk+kernel@arm.linux.org.uk> 1258664311 +0000
committer Russell King <rmk+kernel@arm.linux.org.uk> 1259084495 +0000

ARM: dma-mapping: clean up coherent arch dma allocation

IXP23xx added support for dma_alloc_coherent() for DMA arches with an
exception in dma_alloc_coherent().  This is a subset of what goes on
in __dma_alloc(), and there is no reason why dma_alloc_writecombine()
should not be given the same treatment (except, maybe, that IXP23xx
doesn't use it.)

We can better deal with this by moving the arch_is_coherent() test
inside __dma_alloc() and killing the code duplication.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Greg Ungerer <gerg@uclinux.org>