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Add reset handling in the channel probe path using device_reset_optional() to trigger a reset pulse on the channel during initialization. Platforms without per-channel reset continue to work unaffected since device_reset_optional() returns 0 when no reset is specified. Signed-off-by: Golla Nagendra --- drivers/dma/xilinx/zynqmp_dma.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/dma/xilinx/zynqmp_dma.c b/drivers/dma/xilinx/zynqmp_dma.c index f6a812e49ddc..51c831760372 100644 --- a/drivers/dma/xilinx/zynqmp_dma.c +++ b/drivers/dma/xilinx/zynqmp_dma.c @@ -18,6 +18,7 @@ #include #include #include +#include #include "../dmaengine.h" @@ -916,6 +917,11 @@ static int zynqmp_dma_chan_probe(struct zynqmp_dma_device *zdev, if (IS_ERR(chan->regs)) return PTR_ERR(chan->regs); + err = device_reset_optional(&pdev->dev); + if (err) + return dev_err_probe(&pdev->dev, err, + "failed to reset channel\n"); + chan->bus_width = ZYNQMP_DMA_BUS_WIDTH_64; chan->dst_burst_len = ZYNQMP_DMA_MAX_DST_BURST_LEN; chan->src_burst_len = ZYNQMP_DMA_MAX_SRC_BURST_LEN; -- 2.43.0