Transfer timeout when using XDMA driver on Linux

Expected Behaviour

Data transfer should be successful

Actual Behaviour

Data transfer fails with 512 error and timeout is reported in log

Steps to Reproduce

Build and install the driver from https://github.com/Xilinx/dma_ip_drivers (current master/a7219ec)

Run the following script

def test():
    with open("/dev/xdma0_c2h_0", "rb") as xdma:
        data = xdma.read(4)
        print(data.hex())
 
 
if __name__ == '__main__':
    test()

Log is available here: log.txt

Notes

Works as expected on Windows 10

Linux version 2020.1 (a1d510f4eac17b9f293e0cabcfbf4f3fdb558e50) works as expected but no updated versions work.

System Information

Ubuntu 22.04

Kernel 5.15.0-41-generic

Start by running the provided Python reproducer against the XDMA driver on Ubuntu 22.04 with kernel 5.15, then read log.txt and compare the behavior with version 2020.1 and the current master commit. Done means the 4-byte read from /dev/xdma0_c2h_0 completes successfully without the 512 error or timeout.