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The fact that devlink instance lock is held over mlx5 auxiliary devices probe and remove routines brought a need to conditionally take devlink instance lock there. The code is checking a MLX5E_LOCKED_FLOW flag in mlx5 priv struct. This is racy and may lead to access devlink objects without holding instance lock or deadlock. To avoid this, the only lock-wise sane solution is to make the devlink entities created by the auxiliary device independent on the original pci devlink instance. Create devlink instance for the auxiliary device and put the uplink port instance there alongside with the port health reporters. Signed-off-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Jakub Kicinski <kuba@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.