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List: dmaengine
Subject: [PATCH v2 7/7] dmaengine: stm32-mdma: enable descriptor_reuse
From: Pierre-Yves MORDRET <pierre-yves.mordret () st ! com>
Date: 2018-09-28 8:36:34
Message-ID: 1538123794-17085-8-git-send-email-pierre-yves.mordret () st ! com
[Download RAW message or body]
enable reuse to spare descriptors creation on critical UC.
Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
---
Version history:
v1:
* Initial
---
---
drivers/dma/stm32-mdma.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/dma/stm32-mdma.c b/drivers/dma/stm32-mdma.c
index 6b6e63b..80a17dd 100644
--- a/drivers/dma/stm32-mdma.c
+++ b/drivers/dma/stm32-mdma.c
@@ -1715,6 +1715,8 @@ 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) |
--
2.7.4
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