diff mbox

[7/7] dmaengine: at_xdmac: Add DMA_PRIVATE

Message ID 1415875965-6905-8-git-send-email-ludovic.desroches@atmel.com (mailing list archive)
State Superseded
Headers show

Commit Message

Ludovic Desroches Nov. 13, 2014, 10:52 a.m. UTC 
same issue as commit 7f5ae3553685:
"Without DMA_PRIVATE the driver is not able to allocate more than one channel.
Since it uses dma_get_any_slave_channel that calls private_candidate, the
second allocation fails at
/* some channels are already publicly allocated */
"

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
---
 drivers/dma/at_xdmac.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox

Patch

diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
index 586275f..b60d77a 100644
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -1394,6 +1394,11 @@  static int at_xdmac_probe(struct platform_device *pdev)
 	dma_cap_set(DMA_CYCLIC, atxdmac->dma.cap_mask);
 	dma_cap_set(DMA_MEMCPY, atxdmac->dma.cap_mask);
 	dma_cap_set(DMA_SLAVE, atxdmac->dma.cap_mask);
+	/*
+	 * Without DMA_PRIVATE the driver is not able to allocate more than
+	 * one channel, second allocation fails in private_candidate.
+	 */
+	dma_cap_set(DMA_PRIVATE, atxdmac->dma.cap_mask);
 	atxdmac->dma.dev				= &pdev->dev;
 	atxdmac->dma.device_alloc_chan_resources	= at_xdmac_alloc_chan_resources;
 	atxdmac->dma.device_free_chan_resources		= at_xdmac_free_chan_resources;