diff mbox

[2/2] dma: ste_dma40: indicate granularity on channels

Message ID 20170113150209.27077-1-linus.walleij@linaro.org (mailing list archive)
State Accepted
Headers show

Commit Message

Linus Walleij Jan. 13, 2017, 3:02 p.m. UTC
The ste_dma40 has burst level granularity on the residue
registers, which is necessary for some  clients to know,
notably the UART. Before this patch we get this message:

uart-pl011 80007000.uart: RX DMA disabled - no residue processing

This patch fixes it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/dma/ste_dma40.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox

Patch

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 2f0852dfbd1b..a6620b671d1d 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -2838,6 +2838,7 @@  static void d40_ops_init(struct d40_base *base, struct dma_device *dev)
 	dev->device_pause = d40_pause;
 	dev->device_resume = d40_resume;
 	dev->device_terminate_all = d40_terminate_all;
+	dev->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
 	dev->dev = base->dev;
 }