[Trusty] [PULL] UBUNTU: SAUCE: net/mlx4_core: fix network hang and rcu stall

[Ming Lei]

Hi,

These five patches fixes mlx4 ethernet hang and rcu stall problem during
iperf test, and launchpad bug number is 1326108, and all are merged to
linus tree already.

Please pull:

         git://kernel.ubuntu.com/git/ming/ubuntu-trusty.git  master-next


net/mlx4_en: IRQ affinity hint is not cleared on port down
net/mlx4_en: Don't use irq_affinity_notifier to track changes in IRQ
affinity map
net/mlx4_en: Use affinity hint
cpumask: Utility function to set n'th cpu - local cpu first
net/mlx4_core: Enforce irq affinity changes immediatly

Thanks,
--
Ming Lei