From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
This patch has been added to the 4.1 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit 8a75fc54745fd3ce9062ab1cc6429a9da9ac2a68 ]
commit 166de3f1895d ("ath10k: remove supported chain mask") had revealed
an issue on monitor mode. Configuring NSS upon monitor interface
creation is causing target assert in all qca9888x and qca6174 firmware.
Firmware assert issue can be reproduced by below sequence even after
reverting commit 166de3f1895d ("ath10k: remove supported chain mask").
ip link set wlan0 down
iw wlan0 set type monitor
iw phy0 set antenna 7
ip link set wlan0 up
This issue is originally reported on qca9888 with 10.1 firmware.
Fixes: 5572a95b4b ("ath10k: apply chainmask settings to vdev on creation")
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: Janusz Dziedzic <janusz.dziedzic@xxxxxxxxx>
Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/mac.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 1734cc5..56e0a1d 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -3329,7 +3329,10 @@ static int ath10k_add_interface(struct ieee80211_hw *hw,
goto err_vdev_delete;
}
- if (ar->cfg_tx_chainmask) {
+ /* Configuring number of spatial stream for monitor interface is causing
+ * target assert in qca9888 and qca6174.
+ */
+ if (ar->cfg_tx_chainmask && (vif->type != NL80211_IFTYPE_MONITOR)) {
u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);
vdev_param = ar->wmi.vdev_param->nss;
--
2.5.0
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html