Re: [net] i40e: fix handling of HW ATR eviction

[David Miller <davem@davemloft.net>]

From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Mon, 12 Jun 2017 15:38:36 -0700

> From: Jacob Keller <jacob.e.keller@intel.com>
> 
> A recent commit to refactor the driver and remove the hw_disabled_flags
> field accidentally introduced two regressions. First, we overwrote
> pf->flags which removed various key flags including the MSI-X settings.
> 
> Additionally, it was intended that we have now two flags,
> HW_ATR_EVICT_CAPABLe and HW_ATR_EVICT_ENABLED, but this was not done,
> and we accidentally were mis-using HW_ATR_EVICT_CAPABLE everywhere.
> 
> This patch adds the missing piece, HW_ATR_EVICT_ENABLED, and safely
> updates pf->flags instead of overwriting it.
> 
> Without this patch we will have many problems including disabling MSI-X
> support, and we'll attempt to use HW ATR eviction on devices which do
> not support it.
> 
> Fixes: 47994c119a36 ("i40e: remove hw_disabled_flags in favor of using separate flag bits", 2017-04-19)
> Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
> Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

Applied, thanks Jeff.