From: Deren Wu <deren.wu@mediatek.com>
To: Felix Fietkau <nbd@nbd.name>, Lorenzo Bianconi <lorenzo@kernel.org>
Cc: Sean Wang <sean.wang@mediatek.com>,
Soul Huang <Soul.Huang@mediatek.com>,
Ming Yen Hsieh <mingyen.hsieh@mediatek.com>,
Leon Yen <Leon.Yen@mediatek.com>,
Eric-SY Chang <Eric-SY.Chang@mediatek.com>,
KM Lin <km.lin@mediatek.com>,
Robin Chiu <robin.chiu@mediatek.com>,
CH Yeh <ch.yeh@mediatek.com>, Posh Sun <posh.sun@mediatek.com>,
Stella Chang <Stella.Chang@mediatek.com>,
Quan Zhou <quan.zhou@mediatek.com>,
Ryder Lee <ryder.lee@mediatek.com>,
Shayne Chen <shayne.chen@mediatek.com>,
linux-wireless <linux-wireless@vger.kernel.org>,
linux-mediatek <linux-mediatek@lists.infradead.org>,
Deren Wu <deren.wu@mediatek.com>, <stable@vger.kernel.org>
Subject: [PATCH] wifi: mt76: mt7921: do not support one stream on secondary antenna only
Date: Wed, 10 May 2023 14:51:13 +0800 [thread overview]
Message-ID: <cc94dbd5a53537e82d0beaa2d986f0b18e06eee4.1683700651.git.deren.wu@mediatek.com> (raw)
mt7921 support following antenna combiantions only.
* primary + secondary (2x2)
* primary only (1x1)
Since we cannot work on secondary antenna only, return error if the
antenna bitmap is 0x2 in .set_antenna().
For example:
iw phy0 set antenna 3 3 /* valid */
iw phy0 set antenna 1 1 /* valid */
iw phy0 set antenna 2 2 /* invalid */
Cc: stable@vger.kernel.org
Fixes: e0f9fdda81bd ("mt76: mt7921: add ieee80211_ops")
Suggested-by: Knox Chiou <knoxchiou@google.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
---
drivers/net/wireless/mediatek/mt76/mt7921/main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 0c9a472bc81a..6c971c30d6a1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -1364,7 +1364,7 @@ mt7921_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
return -EINVAL;
if ((BIT(hweight8(tx_ant)) - 1) != tx_ant)
- tx_ant = BIT(ffs(tx_ant) - 1) - 1;
+ return -EINVAL;
mt7921_mutex_acquire(dev);
--
2.18.0
reply other threads:[~2023-05-10 6:53 UTC|newest]
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