iwlwifi: mvm: don't WARN about unsuccessful time event

Time event notification can have a failure status even if
the time event was scheduled:
* in START notification, this can happen if the time event
  was scheduled later than the requested apply time.
* in STOP notification, this can happen if the time event
  is truncated.

Even if both happened, the offchannel packets sent during
the remain on channel are very likely to have been sent.
Hence, don't WARN when this happens, but rather print a
discrete line in the kernel log.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/drivers/net/wireless/iwlwifi/mvm/time-event.c b/drivers/net/wireless/iwlwifi/mvm/time-event.c
index 33cf56fdfc41f86b8bb517a8824740bdbb71a896..95ce4b601fef3050085518e59a4e32036c57fbfc 100644 (file)
--- a/drivers/net/wireless/iwlwifi/mvm/time-event.c
+++ b/drivers/net/wireless/iwlwifi/mvm/time-event.c
@@ -176,8 +176,11 @@ static void iwl_mvm_te_handle_notif(struct iwl_mvm *mvm,
         * P2P Device discoveribility, while there are other higher priority
         * events in the system).
         */
-       if (WARN_ONCE(!le32_to_cpu(notif->status),
-                     "Failed to schedule time event\n")) {
+       if (!le32_to_cpu(notif->status)) {
+               bool start = le32_to_cpu(notif->action) &
+                               TE_V2_NOTIF_HOST_EVENT_START;
+               IWL_WARN(mvm, "Time Event %s notification failure\n",
+                        start ? "start" : "end");
                if (iwl_mvm_te_check_disconnect(mvm, te_data->vif, NULL)) {
                        iwl_mvm_te_clear_data(mvm, te_data);
                        return;