local variable "rc" is not used. It is safe to remove and
There is only one caller of libipw_qos_convert_ac_to_parameters().
hence make it void
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
 /*
  * Write QoS parameters from the ac parameters.
  */
-static int libipw_qos_convert_ac_to_parameters(struct
+static void libipw_qos_convert_ac_to_parameters(struct
                                                  libipw_qos_parameter_info
                                                  *param_elm, struct
                                                  libipw_qos_parameters
                                                  *qos_param)
 {
-       int rc = 0;
        int i;
        struct libipw_qos_ac_parameter *ac_params;
        u32 txop;
                txop = le16_to_cpu(ac_params->tx_op_limit) * 32;
                qos_param->tx_op_limit[i] = cpu_to_le16(txop);
        }
-       return rc;
 }
 
 /*