This is a note to let you know that I've just added the patch titled
wifi: mt76: mt7996: fix chainmask calculation in mt7996_set_antenna()
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-mt76-mt7996-fix-chainmask-calculation-in-mt7996.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7efabee87eda123798ff1d0e4a1cc1b865335068
Author: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
Date: Fri Dec 23 18:13:45 2022 +0800
wifi: mt76: mt7996: fix chainmask calculation in mt7996_set_antenna()
[ Upstream commit eb1fdb9f5a2280de6820624cd02e0863babab683 ]
Fix per-band chainmask when restoring from the dev chainmask.
Fixes: 98686cd21624 ("wifi: mt76: mt7996: add driver for MediaTek Wi-Fi 7 (802.11be) devices")
Signed-off-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
index 4421cd54311b1..c423b052e4f4c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
@@ -880,7 +880,10 @@ mt7996_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
phy->mt76->antenna_mask = tx_ant;
/* restore to the origin chainmask which might have auxiliary path */
- if (hweight8(tx_ant) == max_nss)
+ if (hweight8(tx_ant) == max_nss && band_idx < MT_BAND2)
+ phy->mt76->chainmask = ((dev->chainmask >> shift) &
+ (BIT(dev->chainshift[band_idx + 1] - shift) - 1)) << shift;
+ else if (hweight8(tx_ant) == max_nss)
phy->mt76->chainmask = (dev->chainmask >> shift) << shift;
else
phy->mt76->chainmask = tx_ant << shift;
