From 5a90107d79e70d2596fb68be3018e8b7e0ae4534 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 12 Aug 2019 15:50:59 +0200
Subject: [PATCH] mt76: dma: reset q->rx_head on rx reset
Git-commit: 5a90107d79e70d2596fb68be3018e8b7e0ae4534
Patch-mainline: v5.4-rc1
References: jsc#SLE-13430
Fixes rx of the first frame if a fragmented rx was interrupted by the reset
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/mediatek/mt76/dma.c | 6 ++++++
1 file changed, 6 insertions(+)
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
--
2.16.4