[PATCH] mt76: mt7921: fix kernel warning when reset on vif is not sta
Lorenzo Bianconi
lorenzo.bianconi at redhat.com
Tue Jun 15 14:35:36 PDT 2021
> From: Sean Wang <sean.wang at mediatek.com>
>
> ieee80211_disconnect is only called for the staton mode.
>
> [ 714.050429] WARNING: CPU: 1 PID: 382 at net/mac80211/mlme.c:2787
> ieee80211_disconnect+0x108/0x118 [mac80211]
> [ 714.116704] Hardware name: MediaTek Asurada rev1 board (DT)
> [ 714.122303] Workqueue: mt76 mt7921_mac_reset_work [mt7921e]
> [ 714.127877] pstate: 20c00009 (nzCv daif +PAN +UAO)
> [ 714.132761] pc : ieee80211_disconnect+0x108/0x118 [mac80211]
> [ 714.138430] lr : mt7921_vif_connect_iter+0x28/0x54 [mt7921e]
> [ 714.144083] sp : ffffffc0107cbbd0
> [ 714.147394] x29: ffffffc0107cbbd0 x28: ffffffb26c9cb928
> [ 714.152706] x27: ffffffb26c9cbd98 x26: 0000000000000000
> [ 714.158017] x25: 0000000000000003 x24: ffffffb26c9c9c38
> [ 714.163328] x23: ffffffb26c9c9c38 x22: ffffffb26c9c8860
> [ 714.168639] x21: ffffffb23b940000 x20: ffffffb26c9c8860
> [ 714.173950] x19: 0000000000000001 x18: 000000000000b67e
> [ 714.179261] x17: 00000000064dd409 x16: ffffffd739cb28f0
> [ 714.184571] x15: 0000000000000000 x14: 0000000000000227
> [ 714.189881] x13: 0000000000000400 x12: ffffffd73a4eb060
> [ 714.195191] x11: 0000000000000000 x10: 0000000000000000
> [ 714.200502] x9 : ffffffd703a0a000 x8 : 0000000000000006
> [ 714.205812] x7 : 2828282828282828 x6 : ffffffb200440396
> [ 714.211122] x5 : 0000000000000000 x4 : 0000000000000004
> [ 714.216432] x3 : 0000000000000000 x2 : ffffffb23b940c90
> [ 714.221743] x1 : 0000000000000001 x0 : ffffffb23b940c90
> [ 714.227054] Call trace:
> [ 714.229594] ieee80211_disconnect+0x108/0x118 [mac80211]
> [ 714.234913] mt7921_vif_connect_iter+0x28/0x54 [mt7921e]
> [ 714.240313] __iterate_interfaces+0xc4/0xdc [mac80211]
> [ 714.245541] ieee80211_iterate_interfaces+0x4c/0x68 [mac80211]
> [ 714.251381] mt7921_mac_reset_work+0x410/0x468 [mt7921e]
> [ 714.256696] process_one_work+0x208/0x3c8
> [ 714.260706] worker_thread+0x23c/0x3e8
> [ 714.264456] kthread+0x140/0x17c
> [ 714.267685] ret_from_fork+0x10/0x18
>
> Fixes: 0c1ce9884607 ("mt76: mt7921: add wifi reset support")
> Signed-off-by: Sean Wang <sean.wang at mediatek.com>
I am fine with this patch but I guess you are not using an update tree since
mt7921 supports just sta mode so far.
Regards,
Lorenzo
> ---
> drivers/net/wireless/mediatek/mt76/mt7921/mac.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
> index fb4de73df701..0a2df295596a 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
> @@ -1269,7 +1269,8 @@ mt7921_vif_connect_iter(void *priv, u8 *mac,
> struct mt7921_vif *mvif = (struct mt7921_vif *)vif->drv_priv;
> struct mt7921_dev *dev = mvif->phy->dev;
>
> - ieee80211_disconnect(vif, true);
> + if (vif->type == NL80211_IFTYPE_STATION)
> + ieee80211_disconnect(vif, true);
>
> mt76_connac_mcu_uni_add_dev(&dev->mphy, vif, &mvif->sta.wcid, true);
> mt7921_mcu_set_tx(dev, vif);
> --
> 2.25.1
>
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