The "mcdi_err_arg" probe still reports results of failed MCDI commands, unless the caller invoked efx_mcdi_execute_quiet(). Submitted by: Andy Moreton <amoreton at solarflare.com> Reviewed by: gnn Sponsored by: Solarflare Communications, Inc. MFC after: 2 days Differential Revision: https://reviews.freebsd.org/D4919