Return-path: Received: from wolverine01.qualcomm.com ([199.106.114.254]:47343 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754069AbcC3PnQ (ORCPT ); Wed, 30 Mar 2016 11:43:16 -0400 From: Rajkumar Manoharan To: CC: , , "Rajkumar Manoharan" Subject: [PATCH 3/3] ath10k: fix unconditional num_mpdus_ready subtraction Date: Wed, 30 Mar 2016 21:12:31 +0530 Message-ID: <1459352551-11773-3-git-send-email-rmanohar@qti.qualcomm.com> (sfid-20160330_174318_495860_73B704E8) In-Reply-To: <1459352551-11773-1-git-send-email-rmanohar@qti.qualcomm.com> References: <1459352551-11773-1-git-send-email-rmanohar@qti.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-wireless-owner@vger.kernel.org List-ID: Decrement num_mpdus_ready only when rx amsdu is processed successfully. Not doing so, will result in leak and impact stabilty under low memory cases. Signed-off-by: Rajkumar Manoharan --- drivers/net/wireless/ath/ath10k/htt_rx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c b/drivers/net/wireless/ath/ath10k/htt_rx.c index 96a7417..9696c2e 100644 --- a/drivers/net/wireless/ath/ath10k/htt_rx.c +++ b/drivers/net/wireless/ath/ath10k/htt_rx.c @@ -2412,14 +2412,12 @@ static void ath10k_htt_txrx_compl_task(unsigned long ptr) struct ath10k_htt *htt = (struct ath10k_htt *)ptr; struct ath10k *ar = htt->ar; struct htt_tx_done tx_done = {}; - struct sk_buff_head rx_q; struct sk_buff_head rx_ind_q; struct sk_buff_head tx_ind_q; struct sk_buff *skb; unsigned long flags; int num_mpdus; - __skb_queue_head_init(&rx_q); __skb_queue_head_init(&rx_ind_q); __skb_queue_head_init(&tx_ind_q); @@ -2448,11 +2446,13 @@ static void ath10k_htt_txrx_compl_task(unsigned long ptr) ath10k_mac_tx_push_pending(ar); num_mpdus = atomic_read(&htt->num_mpdus_ready); - atomic_sub(num_mpdus, &htt->num_mpdus_ready); - while (num_mpdus--) { + while (num_mpdus) { if (ath10k_htt_rx_handle_amsdu(htt)) break; + + num_mpdus--; + atomic_dec(&htt->num_mpdus_ready); } while ((skb = __skb_dequeue(&rx_ind_q))) { -- 2.7.4