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The XDMA did not work when I send big buffer

2

[ 1862.197073] libxdma:xdma_xfer_submit: xfer 0x000000009e11f7b1,2048, s 0x1 timed out, ep 0x800. [ 1862.197096] libxdma:engine_reg_dump: 0-C2H0-ST: ioread32(0x00000000866b043a) = 0x1fc18006 (id). [ 1862.197110] libxdma:engine_reg_dump: 0-C2H0-ST: ioread32(0x000000007e34bd2e) = 0x00000001 (status). [ 1862.197122] libxdma:engine_reg_dump:...