Mellanox ConnectX-2 cards stopped working after update to kernel-2.6.32-504.1.3.el6

Solution Unverified - Updated -

Issue

  • Mellanox ConnectX-2 cards stopped working after update to kernel-2.6.32-504.1.3.el6, everything works fine on 'kernel-2.6.32-504.el6`
  • Why does the mlx4_en fails to load after upgrading the system in RHEL 6 ?

Environment

  • Red Hat Enterprise Linux 6.6 (kernel-2.6.32-504.1.3.el6)
  • Mellanox ConnectX-2 Infiniband card operating in Ethernet mode (mlx4_core and mlx4_en drivers)

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