iavf: check for null in iavf_fix_features
[ Upstream commit 8a4a126f ] If the driver has lost contact with the PF then it enters a disabled state and frees adapter->vf_res. However, ndo_fix_features can still be called on the interface, so we need to check for this condition first. Since we have no information on the features at this time simply leave them unmodified and return. Fixes: c4445aed ("i40evf: Fix VLAN features") Signed-off-by: Nicholas Nunley <nicholas.d.nunley@intel.com> Tested-by: Tony Brelinski <tony.brelinski@intel.com> Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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