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Subject[PATCH 05/20] dmatest: do DMA unmap for MEMCPY operations
Date
Make driver do DMA unmap for MEMCPY operations.

Cc: Vinod Koul <vinod.koul@intel.com>
Cc: Havard Skinnemoen <hskinnemoen@gmail.com>
Cc: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
drivers/dma/dmatest.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 24225f0..22655a7 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -306,10 +306,16 @@ static int dmatest_func(void *data)

/*
* src buffers are freed by the DMAEngine code with dma_unmap_single()
+ * (except DMA_MEMCPY operations)
* dst buffers are freed by ourselves below
*/
flags = DMA_CTRL_ACK | DMA_PREP_INTERRUPT
- | DMA_COMPL_SKIP_DEST_UNMAP | DMA_COMPL_SRC_UNMAP_SINGLE;
+ | DMA_COMPL_SKIP_DEST_UNMAP;
+
+ if (thread->type == DMA_MEMCPY)
+ flags |= DMA_COMPL_SKIP_SRC_UNMAP;
+ else
+ flags |= DMA_COMPL_SRC_UNMAP_SINGLE;

while (!kthread_should_stop()
&& !(iterations && total_tests >= iterations)) {
@@ -443,6 +449,9 @@ static int dmatest_func(void *data)
}

/* Unmap by myself (see DMA_COMPL_SKIP_DEST_UNMAP above) */
+ if (thread->type == DMA_MEMCPY)
+ dma_unmap_single(dev->dev, dma_srcs[0], len,
+ DMA_TO_DEVICE);
for (i = 0; i < dst_cnt; i++)
dma_unmap_single(dev->dev, dma_dsts[i], test_buf_size,
DMA_BIDIRECTIONAL);
--
1.8.0


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