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[2/3] dma: zx: set DMA_CYCLIC cap_mask bit

Message ID 1481810617-7650-2-git-send-email-shawnguo@kernel.org (mailing list archive)
State New, archived
Headers show

Commit Message

Shawn Guo Dec. 15, 2016, 2:03 p.m. UTC 
From: Shawn Guo <shawn.guo@linaro.org>

The zx_dma driver supports cyclic transfer mode.  Let's set DMA_CYCLIC
cap_mask bit to make that clear, and avoid unnecessary failure when
clients request channel via dma_request_chan_by_mask() with DMA_CYCLIC
bit set in mask.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
 drivers/dma/zx_dma.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Jun Nie Dec. 22, 2016, 6:17 a.m. UTC | #1 
2016-12-15 22:03 GMT+08:00 Shawn Guo <shawnguo@kernel.org>:
> From: Shawn Guo <shawn.guo@linaro.org>
>
> The zx_dma driver supports cyclic transfer mode.  Let's set DMA_CYCLIC
> cap_mask bit to make that clear, and avoid unnecessary failure when
> clients request channel via dma_request_chan_by_mask() with DMA_CYCLIC
> bit set in mask.
>
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> ---
>  drivers/dma/zx_dma.c | 1 +
>  1 file changed, 1 insertion(+)
>

Reviewed-by:  Jun Nie <jun.nie@linaro.org>
diff mbox

Patch

diff --git a/drivers/dma/zx_dma.c b/drivers/dma/zx_dma.c
index 380276d078b2..33155c6816cc 100644
--- a/drivers/dma/zx_dma.c
+++ b/drivers/dma/zx_dma.c
@@ -812,6 +812,7 @@  static int zx_dma_probe(struct platform_device *op)
 	INIT_LIST_HEAD(&d->slave.channels);
 	dma_cap_set(DMA_SLAVE, d->slave.cap_mask);
 	dma_cap_set(DMA_MEMCPY, d->slave.cap_mask);
+	dma_cap_set(DMA_CYCLIC, d->slave.cap_mask);
 	dma_cap_set(DMA_PRIVATE, d->slave.cap_mask);
 	d->slave.dev = &op->dev;
 	d->slave.device_free_chan_resources = zx_dma_free_chan_resources;