From cf526b7b9fcb6be830f99ab9529148a0fdba274a Mon Sep 17 00:00:00 2001
From: Anish Nataraj <anishn@codeaurora.org>
Date: Mon, 26 Mar 2018 15:55:30 +0530
Subject: [PATCH] qcacmn: Free memory for ppdu descriptor tlv list in detach
 path

ppdu tlvs are maintained in linked list and was not freed in detach
path but only freed after wdi post message. This was causing memory
leak to happen

Change-Id: I7b7b49d7ec829a6ef6b99edb1c7999bed713ae49
---
 dp/wifi3.0/dp_main.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/dp/wifi3.0/dp_main.c b/dp/wifi3.0/dp_main.c
index babf9dd87b6c..67c96182c188 100644
--- a/dp/wifi3.0/dp_main.c
+++ b/dp/wifi3.0/dp_main.c
@@ -2702,6 +2702,26 @@ static void dp_neighbour_peers_detach(struct dp_pdev *pdev)
 	qdf_spinlock_destroy(&pdev->neighbour_peer_mutex);
 }
 
+/**
+* dp_htt_ppdu_stats_detach() - detach stats resources
+* @pdev: Datapath PDEV handle
+*
+* Return: void
+*/
+static void dp_htt_ppdu_stats_detach(struct dp_pdev *pdev)
+{
+	struct ppdu_info *ppdu_info, *ppdu_info_next;
+
+	TAILQ_FOREACH_SAFE(ppdu_info, &pdev->ppdu_info_list,
+			ppdu_info_list_elem, ppdu_info_next) {
+		if (!ppdu_info)
+			break;
+		qdf_assert_always(ppdu_info->nbuf);
+		qdf_nbuf_free(ppdu_info->nbuf);
+		qdf_mem_free(ppdu_info);
+	}
+}
+
 /*
 * dp_pdev_detach_wifi3() - detach txrx pdev
 * @txrx_pdev: Datapath PDEV handle
@@ -2773,6 +2793,8 @@ static void dp_pdev_detach_wifi3(struct cdp_pdev *txrx_pdev, int force)
 		curr_nbuf = next_nbuf;
 	}
 
+	dp_htt_ppdu_stats_detach(pdev);
+
 	soc->pdev_list[pdev->pdev_id] = NULL;
 	soc->pdev_count--;
 	wlan_cfg_pdev_detach(pdev->wlan_cfg_ctx);