gate_exists
if (gate_exists(gate)) {
if (gate_exists(gate) && !gate_valid(gate, "gate", name))
if (!gate_exists(gate))
if (!gate_exists(gate))
BUG_ON(!gate_exists(gate));
if (!gate_exists(gate))
if (!gate_exists(gate) || !gate_is_sw_managed(gate))
if (!gate_exists(gate) || !gate_is_sw_managed(gate))