Thread (27 messages) 27 messages, 3 authors, 2018-10-19
STALE2790d
Revisions (3)
  1. v1 [diff vs current]
  2. v2 [diff vs current]
  3. v3 current

[PATCH v3 7/7] dmaengine: stm32-mdma: enable descriptor_reuse

From: Pierre-Yves MORDRET <hidden>
Date: 2018-09-28 13:03:16
Also in: dmaengine, linux-devicetree, lkml
Subsystem: dma generic offload engine subsystem, the rest · Maintainers: Vinod Koul, Linus Torvalds

enable reuse to spare descriptors creation on critical UC.

Signed-off-by: Pierre-Yves MORDRET <redacted>
---
  Version history:
    v3:
    v2:
    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
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help