From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 12 Aug 2019 13:50:59 +0000 (+0200)
Subject: mt76: dma: reset q->rx_head on rx reset
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=5a90107d79e70d2596fb68be3018e8b7e0ae4534;p=openwrt%2Fstaging%2Fblogic.git

mt76: dma: reset q->rx_head on rx reset

Fixes rx of the first frame if a fragmented rx was interrupted by the reset

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c
index 46f5223b4d89..c747eb24581c 100644
--- a/drivers/net/wireless/mediatek/mt76/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/dma.c
@@ -431,6 +431,12 @@ mt76_dma_rx_reset(struct mt76_dev *dev, enum mt76_rxq_id qid)
 	mt76_dma_rx_cleanup(dev, q);
 	mt76_dma_sync_idx(dev, q);
 	mt76_dma_rx_fill(dev, q);
+
+	if (!q->rx_head)
+		return;
+
+	dev_kfree_skb(q->rx_head);
+	q->rx_head = NULL;
 }
 
 static void