}
                        break;
                }
-               if ((p == NULL) || (ie_len == 0))
+               if ((!p) || (ie_len == 0))
                        break;
        }
 
                                break;
                        }
 
-                       if ((p == NULL) || (ie_len == 0))
+                       if ((!p) || (ie_len == 0))
                                break;
                }
        }
        psta = rtw_get_stainfo(&padapter->stapriv, pbss_network->MacAddress);
        if (!psta) {
                psta = rtw_alloc_stainfo(&padapter->stapriv, pbss_network->MacAddress);
-               if (psta == NULL)
+               if (!psta)
                        return _FAIL;
        }
 
        DBG_88E("%s\n", __func__);
 
        pwps_ie_src = pmlmepriv->wps_beacon_ie;
-       if (pwps_ie_src == NULL)
+       if (!pwps_ie_src)
                return;
 
        pwps_ie = rtw_get_wps_ie(ie+_FIXED_IE_LENGTH_, ielen-_FIXED_IE_LENGTH_, NULL, &wps_ielen);
 
-       if (pwps_ie == NULL || wps_ielen == 0)
+       if (!pwps_ie || wps_ielen == 0)
                return;
 
        wps_offset = (uint)(pwps_ie-ie);