Patch "ath10k: fix a warning during channel switch with multiple vaps" has been added to the 4.9-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
ath10k: fix a warning during channel switch with multiple vaps
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ath10k-fix-a-warning-during-channel-switch-with-multiple-vaps.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From foo@baz Sun Mar 18 16:55:33 CET 2018
From: Mohammed Shafi Shajakhan <[email protected]>
Date: Wed, 8 Mar 2017 13:52:06 +0200
Subject: ath10k: fix a warning during channel switch with multiple vaps
From: Mohammed Shafi Shajakhan <[email protected]>
[ 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])
--- drivers/net/wireless/ath/ath10k/mac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/net/wireless/ath/ath10k/mac.c +1 -1
@@ -7070,7 +7070,7 @@ ath10k_mac_update_rx_channel(struct ath1lockdep_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
Patches currently in stable-queue which might be from [email protected] are
queue-4.9/ath10k-fix-fetching-channel-during-potential-radar-detection.patch queue-4.9/ath10k-fix-compile-time-sanity-check-for-ce4-buffer-size.patch queue-4.9/ath10k-fix-a-warning-during-channel-switch-with-multiple-vaps.patch queue-4.9/ath10k-disallow-dfs-simulation-if-dfs-channel-is-not-enabled.patch