commit 387aa9c54b900c5f82f904f17d9ed3deb008289e
author Padma, Santhosh Kumar <skpadma@qti.qualcomm.com> Fri Jun 19 15:39:37 2015 +0530
committer Satyanarayana Dash <sadash@codeaurora.org> Sun Sep 13 15:11:41 2015 +0530
tree ff0d27317f81ad01c6376e9f6b5fc4be35479c19
parent 21b5e24689b90cf82f09416525d00c6ad788a5bb

prima: extscan: Update API extscan_get_valid_channels

1. Add change to parse and fetch max channels
2. Add change to send no of channels within the limits of max channels

Change-Id: Idd856a4f2b3a67a3a2cb65962a457379e6551665
CRs-Fixed: 834122

CORE/HDD/src/wlan_hdd_cfg80211.c

diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index d51e7e0..0e1b326 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -3954,7 +3954,7 @@
     tANI_U32 ChannelList[WNI_CFG_VALID_CHANNEL_LIST_LEN] = {0};
     tANI_U8 numChannels                                  = 0;
     struct nlattr *tb[QCA_WLAN_VENDOR_ATTR_EXTSCAN_SUBCMD_CONFIG_PARAM_MAX + 1];
-    tANI_U32 requestId;
+    tANI_U32 requestId, maxChannels;
     tWifiBand wifiBand;
     eHalStatus status;
     struct sk_buff *replySkb;
@@ -3995,6 +3995,16 @@
      tb[QCA_WLAN_VENDOR_ATTR_EXTSCAN_GET_VALID_CHANNELS_CONFIG_PARAM_WIFI_BAND]);
     hddLog(VOS_TRACE_LEVEL_INFO, FL("Wifi band (%d)"), wifiBand);
 
+    /* Parse and fetch max channels */
+    if (!tb[QCA_WLAN_VENDOR_ATTR_EXTSCAN_GET_VALID_CHANNELS_CONFIG_PARAM_MAX_CHANNELS])
+    {
+        hddLog(LOGE, FL("attr max channels failed"));
+        return -EINVAL;
+    }
+    maxChannels = nla_get_u32(
+     tb[QCA_WLAN_VENDOR_ATTR_EXTSCAN_GET_VALID_CHANNELS_CONFIG_PARAM_MAX_CHANNELS]);
+    hddLog(VOS_TRACE_LEVEL_INFO, FL("Max channels %d"), maxChannels);
+
     status = sme_GetValidChannelsByBand((tHalHandle)(pHddCtx->hHal),
                                         wifiBand, ChannelList,
                                         &numChannels);
@@ -4003,7 +4013,10 @@
            FL("sme_GetValidChannelsByBand failed (err=%d)"), status);
         return -EINVAL;
     }
+
+    numChannels = VOS_MIN(numChannels, maxChannels);
     hddLog(VOS_TRACE_LEVEL_INFO, FL("Number of channels (%d)"), numChannels);
+
     for (i = 0; i < numChannels; i++)
         hddLog(VOS_TRACE_LEVEL_INFO, "Channel: %u ", ChannelList[i]);