From: Mohammed Shafi Shajakhan <[email protected]>
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 <[email protected]>
---
drivers/net/wireless/ath/ath10k/mac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index d1b7edb..b416958 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -7085,7 +7085,7 @@ static int ath10k_ampdu_action(struct ieee80211_hw *hw,
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
--
1.9.1
Mohammed Shafi Shajakhan <[email protected]> wrote:
> From: Mohammed Shafi Shajakhan <[email protected]>
>
> 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 <[email protected]>
Patch applied to ath-next branch of ath.git, thanks.
c73f8c00330f ath10k: fix a warning during channel switch with multiple vaps
--
https://patchwork.kernel.org/patch/9579679/
Documentation about submitting wireless patches and checking status
from patchwork:
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches