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[ Upstream commit8a4a126f4b] 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:c4445aedfe("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>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.