ARM: dma-mapping: factor dma_free_coherent() common code

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We effectively have three implementations of dma_free_coherent() mixed up
in the code; the incoherent MMU, coherent MMU and noMMU versions.

The coherent MMU and noMMU versions are actually functionally identical.
The incoherent MMU version is almost the same, but with the additional
step of unmapping the secondary mapping.

Separate out this additional step into __dma_free_remap() and simplify
the resulting dma_free_coherent() code.

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

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Russell King 2009-11-19 16:31:39 +00:00

parent 04da56943b

commit 695ae0af5a

1 changed files with 68 additions and 73 deletions

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arch/arm/mm/dma-mapping.c

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