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5e3c420dcc
This fixes the problem where uio application was unable to use multple queues on restart. The root cause is that the callbacks are cleared on disconnect. Change to setting up callbacks everytime in open. Fixes: cdfa835c6e5e ("uio_hv_generic: defer opening vmbus until first use") Reported-by: Mohammed Gamal <mgamal@redhat.com> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>