From f0ff5d3aa648128d0fc8055df072551d0d89c88d Mon Sep 17 00:00:00 2001
From: Sean Wang <sean.wang@mediatek.com>
Date: Tue, 19 Oct 2021 07:11:38 +0800
Subject: [PATCH] mt76: mt7921: make all event parser reusable between mt7921s and mt7921e
Git-commit: f0ff5d3aa648128d0fc8055df072551d0d89c88d
Patch-mainline: v5.16-rc1
References: bsc#1209980
The longer event such as the event for mcu_get_nic_capability would hold
the data in paged fragment skb for the SDIO device so we turn the skb to
be linearized skb before accessing it to reuse the same event parser
betweem mt7921s and mt7921e.
Tested-by: Deren Wu <deren.wu@mediatek.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/mediatek/mt76/mt7921/mcu.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index 10b992103ade..e315eb4186d3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -455,7 +455,12 @@ mt7921_mcu_rx_unsolicited_event(struct mt7921_dev *dev, struct sk_buff *skb)
void mt7921_mcu_rx_event(struct mt7921_dev *dev, struct sk_buff *skb)
{
- struct mt7921_mcu_rxd *rxd = (struct mt7921_mcu_rxd *)skb->data;
+ struct mt7921_mcu_rxd *rxd;
+
+ if (skb_linearize(skb))
+ return;
+
+ rxd = (struct mt7921_mcu_rxd *)skb->data;
if (rxd->eid == 0x6) {
mt76_mcu_rx_event(&dev->mt76, skb);
--
2.35.3