From: Felix Fietkau <nbd@nbd.name>
Date: Wed, 25 Apr 2018 09:11:24 +0000 (+0200)
Subject: mt76: check for pending reset before attempting to schedule tx
X-Git-Tag: v4.19~872^2~217^2~36
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=95135e8c0b4add86d3ce1ab5a24881b673c2db04;p=platform%2Fkernel%2Flinux-rpi.git

mt76: check for pending reset before attempting to schedule tx

The check within mt76_txq_send_burst is not enough, as it happens after
a first frame has already been queued up

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---

diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index 6aca794..7ecd2d7 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -385,6 +385,10 @@ restart:
 		bool empty = false;
 		int cur;
 
+		if (test_bit(MT76_SCANNING, &dev->state) ||
+		    test_bit(MT76_RESET, &dev->state))
+			return -EBUSY;
+
 		mtxq = list_first_entry(&hwq->swq, struct mt76_txq, list);
 		if (mtxq->send_bar && mtxq->aggr) {
 			struct ieee80211_txq *txq = mtxq_to_txq(mtxq);