diff options
| author | Deren Wu <deren.wu@mediatek.com> | 2023-05-10 14:51:13 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-06 21:28:39 +0100 |
| commit | 46d13013b574d6092db9cadf22ce8b5d46abbfea (patch) | |
| tree | 602c5e49ecdd37641dc137b62f4e46c4dae50891 /drivers | |
| parent | a5c2a467e9e789ae0891de55b766daac52e3b7b3 (diff) | |
wifi: mt76: mt7921: do not support one stream on secondary antenna only
commit d616d3680264beb9a9d2c4fc681064b06f447eeb upstream.
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>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7921/main.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c index 7b48df301079..b34f9e6500cc 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c +++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c @@ -994,7 +994,7 @@ 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); |