Commit 61cc13a5 authored Jan 10, 2013 by Andy Shevchenko Committed by Vinod Koul Jan 12, 2013

dmaengine: introduce is_slave_direction function



This function helps to distinguish the slave type of transfer by checking the
direction parameter.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

parent 21fe3c52

include/linux/dmaengine.h

+5 −0

Original line number	Diff line number	Diff line
		@@ -621,6 +621,11 @@ static inline int dmaengine_slave_config(struct dma_chan *chan,
		(unsigned long)config);
		}

		static inline bool is_slave_direction(enum dma_transfer_direction direction)
		{
		return (direction == DMA_MEM_TO_DEV) \|\| (direction == DMA_DEV_TO_MEM);
		}

		static inline struct dma_async_tx_descriptor *dmaengine_prep_slave_single(
		struct dma_chan *chan, dma_addr_t buf, size_t len,
		enum dma_transfer_direction dir, unsigned long flags)