Merge tag 'ntb-6.6' of https://github.com/jonmason/ntb

Merge tag 'ntb-6.6' of https://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:
 "Link toggling fixes and debugfs error path fixes"

[ And for everybody like me who always have to remind themselves what
  the TLA of the day is, and what NTB stands for - it's a PCIe
  "Non-Transparent Bridge" thing    - Linus ]

* tag 'ntb-6.6' of https://github.com/jonmason/ntb:
  ntb: Check tx descriptors outstanding instead of head/tail for tx queue
  ntb: Fix calculation ntb_transport_tx_free_entry()
  ntb: Drop packets when qp link is down
  ntb: Clean up tx tail index on link down
  ntb: amd: Drop unnecessary error check for debugfs_create_dir
  NTB: ntb_tool: Switch to memdup_user_nul() helper
  dtivers: ntb: fix parameter check in perf_setup_dbgfs()
  ntb: Remove error checking for debugfs_create_dir()