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authorLinus Walleij <linus.walleij@linaro.org>2017-01-13 18:02:09 +0300
committerVinod Koul <vinod.koul@intel.com>2017-01-14 18:03:42 +0300
commit15c606686541d49cc38465a3cfe25c23bff4395b (patch)
tree1ee1f7c669f4b9468388b0c557f972d8e1197ce1 /drivers/dma/ste_dma40.c
parent49873e99b7b5d59eef238199fd55f8345e860824 (diff)
downloadlinux-15c606686541d49cc38465a3cfe25c23bff4395b.tar.xz
dmaengine: ste_dma40: indicate granularity on channels
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> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ste_dma40.c')
-rw-r--r--drivers/dma/ste_dma40.c1
1 files changed, 1 insertions, 0 deletions
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;
}