dmaengine: stm32-mdma: enable descriptor_reuse

Enable descriptor reuse to allow client to resubmit already processed
descriptors in order to save descriptor creation time.

Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
Link: https://lore.kernel.org/r/20200127085334.13163-6-amelie.delaunay@st.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 2dbd1f3..f2043f4 100644 (file)
--- a/drivers/dma/stm32-mdma.c
+++ b/drivers/dma/stm32-mdma.c
@@ -1618,6 +1618,8 @@ static int stm32_mdma_probe(struct platform_device *pdev)
        dd->device_resume = stm32_mdma_resume;
        dd->device_terminate_all = stm32_mdma_terminate_all;
        dd->device_synchronize = stm32_mdma_synchronize;
+       dd->descriptor_reuse = true;
+
        dd->src_addr_widths = BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |
                BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |
                BIT(DMA_SLAVE_BUSWIDTH_4_BYTES) |