On 10/25/23 20:58, Deren Wu (武德仁) wrote:
Hi Ben,
On Wed, 2023-10-25 at 09:05 -0700, Ben Greear wrote:
I noticed mt7922 radios would no longer enable 6e band in wireless-
next.
My test system has Intel radios and mt7922 radios in it. I bisected
to the commit
below. It looks like that patch can disable 6e based on regdom
change, but cannot
enable 6e again in case regdom changes back to something that
supports 6e.
Intel tri-band radios disable 6e by default, then enable it after
scanning
US regdom beacons. Maybe that regdom changing by Intel helps break
the mt7922
with the below patch applied?
Thanks for the report. There is a capability check missed. Could you
pleae help to check this patch? Let's make sure you run into the same
problem.
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c
b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
index 55baac70860b..a738ea95110e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
@@ -69,6 +69,9 @@ mt7921_regd_channel_update(struct wiphy *wiphy,
struct mt792x_dev *dev)
struct ieee80211_channel *ch;
int i, cfreq;
+ if (!(dev->phy.chip_cap & MT792x_CHIP_CAP_CLC_EVT_EN))
+ dev->phy.clc_chan_conf = 0xff;
+
np = mt76_find_power_limits_node(mdev);
sband = wiphy->bands[NL80211_BAND_5GHZ];
This fixed the problem in a quick test.
I'll add this to our tree and we'll do more testing on it...
Thanks,
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
