Hello Felix.
On středa 26. července 2023 11:17:02 CEST Felix Fietkau wrote:
> The IEEE80211_VHT_CAP_EXT_NSS_BW value already indicates support for half-NSS
> 160 MHz support, so it is wrong to also advertise full 160 MHz support.
>
> Fixes: c2f73eacee3b ("wifi: mt76: mt7915: add back 160MHz channel width support for MT7915")
> Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
> ---
> drivers/net/wireless/mediatek/mt76/mt7915/init.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
> index ee976657bfc3..78552f10b377 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
> @@ -414,7 +414,6 @@ mt7915_init_wiphy(struct mt7915_phy *phy)
> if (!dev->dbdc_support)
> vht_cap->cap |=
> IEEE80211_VHT_CAP_SHORT_GI_160 |
> - IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ |
> FIELD_PREP(IEEE80211_VHT_CAP_EXT_NSS_BW_MASK, 1);
> } else {
> vht_cap->cap |=
>
For some reason this got backported into the stable kernel:
```
$ git log --oneline v6.5.2..v6.5.4 -- drivers/net/wireless/mediatek/mt76/mt7915/
c43017fbebcc3 wifi: mt76: mt7915: fix power-limits while chan_switch
edb1afe042c74 wifi: mt76: mt7915: fix tlv length of mt7915_mcu_get_chan_mib_info
9ec0dec0baea3 wifi: mt76: mt7915: remove VHT160 capability on MT7915
0e61f73e6ebc0 wifi: mt76: mt7915: fix capabilities in non-AP mode
6bce28ce28390 wifi: mt76: mt7915: fix command timeout in AP stop period
7af917d4864c6 wifi: mt76: mt7915: rework tx bytes counting when WED is active
feae00c6468ce wifi: mt76: mt7915: rework tx packets counting when WED is active
70bbcc4ad6544 wifi: mt76: mt7915: fix background radar event being blocked
```
and this broke my mt7915-based AP.
However, if I remove `[VT160]` capability from the hostapd config, things go back to normal. It does seem that 160 MHz still works even.
Is this expected?
Please check.
Thanks.
--
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