rg.uk> 1222692497 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1222692868 +0100

[ARM] dma: add validation of DMA params

Validate the direction argument like x86 does.  In addition,
validate the dma_unmap_* parameters against those passed to
dma_map_* when using the DMA bounce code.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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