Re: [PATCH v2 08/16] mt76: mt7921: make all event parser reusable between mt7921s and mt7921e

Lorenzo Bianconi
2021-09-18T10:16:12Z

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> From: Sean Wang <sean.wang@mediatek.com>
>
> 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>
> Signed-off-by: Sean Wang <sean.wang@mediatek.com>
> ---
> drivers/net/wireless/mediatek/mt76/mt7921/mcu.c | 9 ++++++++-
> 1 file changed, 8 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
> index 866b8797f16e..863781895652 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
> @@ -456,7 +456,14 @@ 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;
> + int ret;
> +
> + ret = skb_linearize(skb);

nit: we do not need ret variable here:

if (skb_linearize(skb))
return;

> + if (ret)
> + return;
> +
> + rxd = (struct mt7921_mcu_rxd *)skb->data;
>
> if (rxd->eid == 0x6) {
> mt76_mcu_rx_event(&dev->mt76, skb);
> --
> 2.25.1
>

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