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These places all rely on the ability to jump from a private struct back to the subchannel struct. Rather than keeping a copy in our back pocket, let's use the relationship provided by the vfio_device embedded within the private. Signed-off-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com> Link: https://lore.kernel.org/r/20221104142007.1314999-3-farman@linux.ibm.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>