From: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Date: Thu, 10 Jan 2013 08:52:56 +0000 (+0200) Subject: dmaengine: introduce is_slave_direction function X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=61cc13a51bcff737ce02d2047834171c0365b00d;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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> --- diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index 4ca9cf73ad3f..bfcdecb5d87a 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -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)