netdev - [PATCH 02/32] staging: wfx: do not stop mac80211 queueing during tx

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Message-Id: <20200401110405.80282-3-Jerome.Pouiller@silabs.com>
Date:   Wed,  1 Apr 2020 13:03:35 +0200
From:   Jerome Pouiller <Jerome.Pouiller@...abs.com>
To:     devel@...verdev.osuosl.org, linux-wireless@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S . Miller" <davem@...emloft.net>,
        Jérôme Pouiller 
        <jerome.pouiller@...abs.com>
Subject: [PATCH 02/32] staging: wfx: do not stop mac80211 queueing during tx_policy upload

From: Jérôme Pouiller <jerome.pouiller@...abs.com>

When a new tx_policy has to be uploaded, it is necessary to avoid any
race between the frame and the policy. So, the driver stops the tx queue
during tx_policy upload. However, it is not necessary to stop mac80211
queuing.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@...abs.com>
---
 drivers/staging/wfx/data_tx.c | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c
index 42183c70d4df..7a7c2518f6cf 100644
--- a/drivers/staging/wfx/data_tx.c
+++ b/drivers/staging/wfx/data_tx.c
@@ -244,9 +244,7 @@ void wfx_tx_policy_upload_work(struct work_struct *work)
 		container_of(work, struct wfx_vif, tx_policy_upload_work);
 
 	wfx_tx_policy_upload(wvif);
-
 	wfx_tx_unlock(wvif->wdev);
-	wfx_tx_queues_unlock(wvif->wdev);
 }
 
 void wfx_tx_policy_init(struct wfx_vif *wvif)
@@ -379,15 +377,9 @@ static u8 wfx_tx_get_rate_id(struct wfx_vif *wvif,
 		dev_warn(wvif->wdev->dev, "unable to get a valid Tx policy");
 
 	if (tx_policy_renew) {
-		/* FIXME: It's not so optimal to stop TX queues every now and
-		 * then.  Better to reimplement task scheduling with a counter.
-		 */
 		wfx_tx_lock(wvif->wdev);
-		wfx_tx_queues_lock(wvif->wdev);
-		if (!schedule_work(&wvif->tx_policy_upload_work)) {
-			wfx_tx_queues_unlock(wvif->wdev);
+		if (!schedule_work(&wvif->tx_policy_upload_work))
 			wfx_tx_unlock(wvif->wdev);
-		}
 	}
 	return rate_id;
 }
-- 
2.25.1