Coalesce the direction bits from the enabled TX and/or RX channels into
the directions bit mask of dma_device. Without this mask set,
dma_get_slave_caps() in the DMAEngine fails, which prevents the driver
from being used with an IIO DMAEngine buffer.
Signed-off-by: Thomas Gessler <thomas.gessler@xxxxxxxxxxxxxxxxxx>
---
drivers/dma/xilinx/xilinx_dma.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c
index 108a7287f4cd..641aaf0c0f1c 100644
--- a/drivers/dma/xilinx/xilinx_dma.c
+++ b/drivers/dma/xilinx/xilinx_dma.c
@@ -3205,6 +3205,10 @@ static int xilinx_dma_probe(struct platform_device *pdev)
}
}
+ for (i = 0; i < xdev->dma_config->max_channels; i++)
+ if (xdev->chan[i])
+ xdev->common.directions |= xdev->chan[i]->direction;
+
if (xdev->dma_config->dmatype == XDMA_TYPE_VDMA) {
for (i = 0; i < xdev->dma_config->max_channels; i++)
if (xdev->chan[i])
--
2.43.0
