Messages in this thread Patch in this message | | | From | Andy Shevchenko <> | Subject | [PATCH 1/2] dmatest: implement two helpers to unmap dma memory | Date | Mon, 10 Dec 2012 13:37:43 +0200 |
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The unmap_src() and unmap_dst() will be used later as well.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> --- drivers/dma/dmatest.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-)
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 3e777d2..b515343 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -236,6 +236,20 @@ static unsigned int min_odd(unsigned int x, unsigned int y) return val % 2 ? val : val - 1; } +static inline void unmap_src(struct device *dev, dma_addr_t *addr, size_t len, + unsigned int count) +{ + while (count--) + dma_unmap_single(dev, addr[count], len, DMA_TO_DEVICE); +} + +static inline void unmap_dst(struct device *dev, dma_addr_t *addr, size_t len, + unsigned int count) +{ + while (count--) + dma_unmap_single(dev, addr[count], len, DMA_BIDIRECTIONAL); +} + /* * This function repeatedly tests DMA transfers of various lengths and * offsets for a given operation type until it is told to exit by @@ -394,13 +408,8 @@ static int dmatest_func(void *data) } if (!tx) { - for (i = 0; i < src_cnt; i++) - dma_unmap_single(dev->dev, dma_srcs[i], len, - DMA_TO_DEVICE); - for (i = 0; i < dst_cnt; i++) - dma_unmap_single(dev->dev, dma_dsts[i], - test_buf_size, - DMA_BIDIRECTIONAL); + unmap_src(dev->dev, dma_srcs, len, src_cnt); + unmap_dst(dev->dev, dma_dsts, test_buf_size, dst_cnt); pr_warning("%s: #%u: prep error with src_off=0x%x " "dst_off=0x%x len=0x%x\n", thread_name, total_tests - 1, @@ -454,9 +463,7 @@ static int dmatest_func(void *data) } /* Unmap by myself (see DMA_COMPL_SKIP_DEST_UNMAP above) */ - for (i = 0; i < dst_cnt; i++) - dma_unmap_single(dev->dev, dma_dsts[i], test_buf_size, - DMA_BIDIRECTIONAL); + unmap_dst(dev->dev, dma_dsts, test_buf_size, dst_cnt); error_count = 0; -- 1.7.10.4
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