5.4-stable review patch. If anyone has any objections, please let me know.
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From: Thomas Gessler thomas.gessler@brueckmann-gmbh.de
[ Upstream commit 7e01511443c30a55a5ae78d3debd46d4d872517e ]
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@brueckmann-gmbh.de Reviewed-by: Suraj Gupta suraj.gupta2@amd.com Tested-by: Folker Schwesinger dev@folker-schwesinger.de Link: https://lore.kernel.org/r/20250507182101.909010-1-thomas.gessler@brueckmann-... Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/dma/xilinx/xilinx_dma.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/dma/xilinx/xilinx_dma.c b/drivers/dma/xilinx/xilinx_dma.c index be44c86a1e037..5b5cbea997ff7 100644 --- a/drivers/dma/xilinx/xilinx_dma.c +++ b/drivers/dma/xilinx/xilinx_dma.c @@ -2490,6 +2490,8 @@ static int xilinx_dma_chan_probe(struct xilinx_dma_device *xdev, return -EINVAL; }
+ xdev->common.directions |= chan->direction; + /* Request the interrupt */ chan->irq = irq_of_parse_and_map(node, 0); err = request_irq(chan->irq, xilinx_dma_irq_handler, IRQF_SHARED,