diff mbox series

[5/8] dmaengine: stm32-dma: use dma_set_max_seg_size to set the sg limit

Message ID 20200129153628.29329-6-amelie.delaunay@st.com (mailing list archive)
State Mainlined
Commit d7a9e42609cab42bf748a66756270652187df084
Headers show
Series STM32 DMA driver fixes and improvements | expand

Commit Message

Amelie Delaunay Jan. 29, 2020, 3:36 p.m. UTC 
This patch adds dma_set_max_seg_size to define sg dma constraint.
This constraint may be taken into account by client to scatter/gather
its buffer.

Signed-off-by: Ludovic Barre <ludovic.barre@st.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>
---
 drivers/dma/stm32-dma.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/dma/stm32-dma.c b/drivers/dma/stm32-dma.c
index 25f7281932bd..b7e18cfcd439 100644
--- a/drivers/dma/stm32-dma.c
+++ b/drivers/dma/stm32-dma.c
@@ -1323,6 +1323,8 @@  static int stm32_dma_probe(struct platform_device *pdev)
 		reset_control_deassert(rst);
 	}
 
+	dma_set_max_seg_size(&pdev->dev, STM32_DMA_ALIGNED_MAX_DATA_ITEMS);
+
 	dma_cap_set(DMA_SLAVE, dd->cap_mask);
 	dma_cap_set(DMA_PRIVATE, dd->cap_mask);
 	dma_cap_set(DMA_CYCLIC, dd->cap_mask);