从日志中可以看到：
[83500.244952] xdma:xdma_device_open: xdma device 0000:03:00.0, 0x000000004da011f3.
[83500.246132] xdma:map_single_bar: BAR0 at 0x70d00000 mapped at 0x00000000db1490c5, length=1048576(/1048576)
[83500.342680] xdma:map_single_bar: BAR1 at 0x70e00000 mapped at 0x0000000060ec012c, length=65536(/65536)
[83500.442924] xdma:map_bars: Failed to detect XDMA config BAR
[83500.576528] xdma:probe_one: pdev 0x000000004da011f3, err -22.
[83500.576534] xdma: probe of 0000:03:00.0 failed with error -22
驱动能够成功映射BAR0和BAR1，但在寻找config BAR时失败。
从日志中可以看到：
[83500.244952] xdma:xdma_device_open: xdma device 0000:03:00.0, 0x000000004da011f3.
[83500.246132] xdma:map_single_bar: BAR0 at 0x70d00000 mapped at 0x00000000db1490c5, length=1048576(/1048576)
[83500.342680] xdma:map_single_bar: BAR1 at 0x70e00000 mapped at 0x0000000060ec012c, length=65536(/65536)
[83500.442924] xdma:map_bars: Failed to detect XDMA config BAR
[83500.576528] xdma:probe_one: pdev 0x000000004da011f3, err -22.
[83500.576534] xdma: probe of 0000:03:00.0 failed with error -22
驱动能够成功映射BAR0和BAR1，但在寻找config BAR时失败。