For cases DP_11B_CCK_RATE, DP_11A_OFDM_RATE and DP_11G_CCK_OFDM_RATE, variable num_mcs is not set and is assigned 0 which is used as a divisor to get the MCS value. To fix this, return 0 for above mentioned cases. Change-Id: Ic1d2dce93a3aa55c323e1f75d30c5f9371822280 CRs-Fixed: 3479813