tree 7fbff617fa4868012f0d1240a90e7e06c4d5158d
parent 8ca371e484e2e5ceb9b90fdb83d8d251017d852b
author Yi Zou <yi.zou@intel.com> 1289964434 -0800
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1289964434 -0800

ixgbe: make sure FCoE DDP user buffers are really released by the HW

When invalidating the DDP context is invalidated, the HW may not be done
with the user buffer right away. In which case, we poll the FCBUFF register
to check if the buffer valid bit is cleared or not, if not, we wait for max
100us that is guaranteed by the HW.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>