For P2P_DEVICE interface the function brcmf_cfg80211_update_proto_addr_mode()
resulted in a crash, because it assumed wdev->netdev would be valid. The
ifp should be obtained through the driver vif structure which contains the
wireless_dev.

Reviewed-by: Hante Meuleman <[email protected]>
Reviewed-by: Franky (Zhenhui) Lin <[email protected]>
Reviewed-by: Daniel (Deognyoun) Kim <[email protected]>
Reviewed-by: Pieter-Paul Giesberts <[email protected]>
Signed-off-by: Arend van Spriel <[email protected]>
---
 drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c 
b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
index 2e134a6..f3a9804 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
@@ -497,8 +497,11 @@ brcmf_configure_arp_offload(struct brcmf_if *ifp, bool 
enable)
 static void
 brcmf_cfg80211_update_proto_addr_mode(struct wireless_dev *wdev)
 {
-       struct net_device *ndev = wdev->netdev;
-       struct brcmf_if *ifp = netdev_priv(ndev);
+       struct brcmf_cfg80211_vif *vif;
+       struct brcmf_if *ifp;
+
+       vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
+       ifp = vif->ifp;
 
        if ((wdev->iftype == NL80211_IFTYPE_ADHOC) ||
            (wdev->iftype == NL80211_IFTYPE_AP) ||
-- 
1.9.1

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