recipes-wifi/linux-mt76/files/patches/3007-mt76-mt7915-wed-find-rx-token-by-physical-address.patch

From 7c2e0d8a456963e4d5df268b7b28ae8a5d0d94d9 Mon Sep 17 00:00:00 2001
From: Sujuan Chen <sujuan.chen@mediatek.com>
Date: Fri, 25 Nov 2022 14:32:35 +0800
Subject: [PATCH 3007/3014] mt76: mt7915: wed: find rx token by physical
 address

The token id in RxDMAD may be incorrect when it is not the last frame due to
WED HW bug. Lookup correct token id by physical address in sdp0.

Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
---
 dma.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/dma.c b/dma.c
index 5163a8e9..0dce97fb 100644
--- a/dma.c
+++ b/dma.c
@@ -406,10 +406,29 @@ mt76_dma_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx,
 
 	if ((q->flags & MT_QFLAG_WED) &&
 	    FIELD_GET(MT_QFLAG_WED_TYPE, q->flags) == MT76_WED_Q_RX) {
+		u32 id, find = 0;
 		u32 token = FIELD_GET(MT_DMA_CTL_TOKEN,
 				      le32_to_cpu(desc->buf1));
-		struct mt76_txwi_cache *t = mt76_rx_token_release(dev, token);
+		struct mt76_txwi_cache *t;
+
+		if (*more) {
+			spin_lock_bh(&dev->rx_token_lock);
+
+			idr_for_each_entry(&dev->rx_token, t, id) {
+				if (t->dma_addr == le32_to_cpu(desc->buf0)) {
+					find = 1;
+					desc->buf1 = FIELD_PREP(MT_DMA_CTL_TOKEN, id);
+					token = id;
+					break;
+				}
+			}
+
+			spin_unlock_bh(&dev->rx_token_lock);
+			if (!find)
+				return NULL;
+		}
 
+		t = mt76_rx_token_release(dev, token);
 		if (!t)
 			return NULL;
 
-- 
2.18.0