tree 7586c8fe0532e4c395c3da5259c6a6cdfc4546ec
parent f452518c982e57538e6d49da0a2c80eef22087ab
author Paul Greenwalt <paul.greenwalt@intel.com> 1520860975 -0400
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1521839906 -0700

ixgbe: add status reg reads to ixgbe_check_remove

Add status register reads and delay between reads to ixgbe_check_remove.
Registers can read 0xFFFFFFFF during PCI reset, which causes the driver
to remove the adapter. The additional status register reads can reduce the
chance of this race condition.

If the status register is not 0xFFFFFFFF, then ixgbe_check_remove returns
the value of the register being read.

Signed-off-by: Paul Greenwalt <paul.greenwalt@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>