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-rw-r--r--drivers/staging/wfx/sta.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/staging/wfx/sta.c b/drivers/staging/wfx/sta.c
index a236e5bb6914..5de9ccf02285 100644
--- a/drivers/staging/wfx/sta.c
+++ b/drivers/staging/wfx/sta.c
@@ -629,8 +629,19 @@ int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd notify_cmd)
{
+ struct wfx_vif *wvif_it;
+
if (notify_cmd != STA_NOTIFY_AWAKE)
return;
+
+ /* Device won't be able to honor CAB if a scan is in progress on any
+ * interface. Prefer to skip this DTIM and wait for the next one.
+ */
+ wvif_it = NULL;
+ while ((wvif_it = wvif_iterate(wvif->wdev, wvif_it)) != NULL)
+ if (mutex_is_locked(&wvif_it->scan_lock))
+ return;
+
if (!wfx_tx_queues_has_cab(wvif) || wvif->after_dtim_tx_allowed)
dev_warn(wvif->wdev->dev, "incorrect sequence (%d CAB in queue)",
wfx_tx_queues_has_cab(wvif));