drivers/net/ethernet/sfc/efx.h:107: warning: No description found for return value of 'efx_filter_insert_filter' drivers/net/ethernet/sfc/efx.h:123: warning: No description found for return value of 'efx_filter_remove_id_safe' drivers/net/ethernet/sfc/efx.h:141: warning: No description found for return value of 'efx_filter_get_filter_safe' drivers/net/ethernet/sfc/ptp.c:206: warning: Excess struct member 'valid' description in 'efx_ptp_timeset' drivers/net/ethernet/sfc/efx.h:107: warning: No description found for return value of 'efx_filter_insert_filter' drivers/net/ethernet/sfc/efx.h:123: warning: No description found for return value of 'efx_filter_remove_id_safe' drivers/net/ethernet/sfc/efx.h:141: warning: No description found for return value of 'efx_filter_get_filter_safe' drivers/net/ethernet/sfc/ptp.c:206: warning: Excess struct member 'valid' description in 'efx_ptp_timeset'