I have the same problem as the link below,
See your reply on the link, need to enter the command “lspci -vvvv”, and confirm whether there is a “Kernel driver in use: tegra_ep_mem” message.
Enter command “lspci -vvvv” on root port x86 system, did not display “Kernel driver in use: tegra_ep_mem” messgae!
lspci -vvvv.txt (5.2 KB)
What can I do to fix this problem? or other problem cause Read/Write always 0xFFFFFFFF on the root port x86 system?