nvme: Rework nvme_io_readwrite() to return -1 on error

Rename nvme_io_readwrite() to nvme_io_xfer() and change it so it
implements the debugging dprintf() and it returns -1 on an error.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Reviewed-by: Alexander Graf <graf@amazon.com>
1 file changed
tree: 0de90525e374acf47c3be453ce1ab6bd6e097b1f
  1. .gitignore
  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. docs/
  7. scripts/
  8. src/
  9. vgasrc/