From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-lj1-x243.google.com ([2a00:1450:4864:20::243]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hcxpi-0004KW-42 for ath10k@lists.infradead.org; Mon, 17 Jun 2019 20:02:27 +0000 Received: by mail-lj1-x243.google.com with SMTP id m23so10548440lje.12 for ; Mon, 17 Jun 2019 13:02:24 -0700 (PDT) From: Erik Stromdahl Subject: [PATCH 2/2] ath10k: switch to ieee80211_tx_dequeue_ni Date: Mon, 17 Jun 2019 22:01:40 +0200 Message-Id: <20190617200140.6189-2-erik.stromdahl@gmail.com> In-Reply-To: <20190617200140.6189-1-erik.stromdahl@gmail.com> References: <20190617200140.6189-1-erik.stromdahl@gmail.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: johannes@sipsolutions.net, kvalo@codeaurora.org, davem@davemloft.net, linux-wireless@vger.kernel.org, ath10k@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Erik Stromdahl Since ath10k_mac_tx_push_txq() can be called from process context, we must explicitly disable softirqs before the call into mac80211. By calling ieee80211_tx_dequeue_ni() instead of ieee80211_tx_dequeue() we make sure softirqs are always disabled even in the case when ath10k_mac_tx_push_txq() is called from process context. Calling ieee80211_tx_dequeue_ni() with softirq's already disabled (e.g., from softirq context) should be safe as the local_bh_disable() and local_bh_enable() functions (called from ieee80211_tx_dequeue_ni) are fully reentrant. Signed-off-by: Erik Stromdahl --- drivers/net/wireless/ath/ath10k/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c index 2d503d6cdcd2..bbed9f1b1778 100644 --- a/drivers/net/wireless/ath/ath10k/mac.c +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -4033,7 +4033,7 @@ int ath10k_mac_tx_push_txq(struct ieee80211_hw *hw, if (ret) return ret; - skb = ieee80211_tx_dequeue(hw, txq); + skb = ieee80211_tx_dequeue_ni(hw, txq); if (!skb) { spin_lock_bh(&ar->htt.tx_lock); ath10k_htt_tx_dec_pending(htt); -- 2.22.0 _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k