brcm80211: fix null pointer access

Do not unconditionally access the chan variable in
brcmf_cfg80211_mgmt_tx() as it may be NULL.
Use freq instead.

Introduced by c2ff8cad64233b539c71a27e2a6e324001143ef0
("brcm80211: make mgmt_tx in brcmfmac accept a NULL channel")

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index 71f4db5..277b37a 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -4050,8 +4050,7 @@ brcmf_cfg80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
                       le16_to_cpu(action_frame->len));
 
                brcmf_dbg(TRACE, "Action frame, cookie=%lld, len=%d, freq=%d\n",
-                         *cookie, le16_to_cpu(action_frame->len),
-                         chan->center_freq);
+                         *cookie, le16_to_cpu(action_frame->len), freq);
 
                ack = brcmf_p2p_send_action_frame(cfg, cfg_to_ndev(cfg),
                                                  af_params);