4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx>
[ Upstream commit c73f8c00330f59ce9b1ace9ff698aca83390d358 ]
Doing a channel switch via hostapd_cli seems to update
the new channel context for each VAP's appropriately as below
in 'ath10k_mac_update_vif_chan', hence we can safely suppress the
warning that shows up during this operation and dump the warning only
if no vaps are available for channel switch
hostapd_cli -i wlan0 chan_switch 5 5200
OK
ath10k_pci : mac chanctx switch n_vifs 3 mode 1
ath10k_pci : mac chanctx switch vdev_id 2 freq 5180->5200 width 0->0
ath10k_pci : mac chanctx switch vdev_id 1 freq 5180->5200 width 0->0
ath10k_pci : mac chanctx switch vdev_id 0 freq 5180->5200 width 0->0
Call Trace:
WARNING: backports-20161201-3.14.77-9ab3068/drivers/net/wireless/ath/ath10k/mac.c:7126
[<c022f2d4>] (warn_slowpath_null) from [<bf7f150c>]
(ath10k_reconfig_complete+0xe4/0x25c [ath10k_core])
[<bf7f150c>] (ath10k_reconfig_complete [ath10k_core])
[<bf7f35f0>] (ath10k_mac_vif_ap_csa_work+0x214/0x370 [ath10k_core])
[<bf7f38b8>] (ath10k_mac_op_change_chanctx+0x108/0x128 [ath10k_core])
[<bf782ac0>] (ieee80211_recalc_chanctx_min_def+0x30c/0x430 [mac80211])
[<bf7830a4>] (ieee80211_recalc_smps_chanctx+0x2ec/0x840 [mac80211])
[<bf7843e8>] (ieee80211_vif_use_reserved_context+0x7c/0xf8 [mac80211])
[<bf7843e8>] (ieee80211_vif_use_reserved_context [mac80211])
[<bf76e5d4>] (ieee80211_csa_finalize_work+0x5c/0x88 [mac80211])
Fixes: d7bf4b4aba05 ("ath10k: fix ar->rx_channel updating logic")
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@xxxxxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/mac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -6427,7 +6427,7 @@ ath10k_mac_update_rx_channel(struct ath1
lockdep_assert_held(&ar->data_lock);
WARN_ON(ctx && vifs);
- WARN_ON(vifs && n_vifs != 1);
+ WARN_ON(vifs && !n_vifs);
/* FIXME: Sort of an optimization and a workaround. Peers and vifs are
* on a linked list now. Doing a lookup peer -> vif -> chanctx for each