mac80211: fix GFP_KERNEL under tasklet context

cfg80211_sta_opmode_change_notify needs a gfp_t flag to hint the nl80211
stack when allocating new skb, but it is called under tasklet context
here with GFP_KERNEL and kernel will yield a warning about it.

Cc: stable@vger.kernel.org
Fixes: ff84e7bfe176 ("mac80211: Add support to notify ht/vht opmode modification.")
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
ACKed-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 3bd3b57697970f8ad2c756d1ab69a360b465ff38..a69ecfb212ed73806d51edef55de926957119046 100644 (file)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3063,7 +3063,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
                        cfg80211_sta_opmode_change_notify(sdata->dev,
                                                          rx->sta->addr,
                                                          &sta_opmode,
-                                                         GFP_KERNEL);
+                                                         GFP_ATOMIC);
                        goto handled;
                }
                case WLAN_HT_ACTION_NOTIFY_CHANWIDTH: {
@@ -3100,7 +3100,7 @@ ieee80211_rx_h_action(struct ieee80211_rx_data *rx)
                        cfg80211_sta_opmode_change_notify(sdata->dev,
                                                          rx->sta->addr,
                                                          &sta_opmode,
-                                                         GFP_KERNEL);
+                                                         GFP_ATOMIC);
                        goto handled;
                }
                default: