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authorWei Yongjun <yongjun_wei@trendmicro.com.cn>2013-04-19 10:14:31 +0800
committerJohn W. Linville <linville@tuxdriver.com>2013-04-22 15:20:25 -0400
commit16a1f736708239a13b475a5b12e5928a834805bc (patch)
treef8fbf0e5139463a2deeffdeb30a3039009b29e9d /drivers/net/wireless
parent4fc4118cdb29ab946b8a586fc766ebb6ae1e1c90 (diff)
brcmfmac: fix potential NULL pointer dereference in brcmf_fws_flow_control_check()
The dereference to 'ifp' in debug code should be moved below the NULL test. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Arend van Spriel <arend@broadcom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless')
-rw-r--r--drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
index 8ae7da8bf68..66cdc45add4 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c
@@ -834,11 +834,12 @@ brcmf_fws_flow_control_check(struct brcmf_fws_info *fws, struct pktq *pq,
{
struct brcmf_if *ifp = fws->drvr->iflist[if_id];
- brcmf_dbg(TRACE,
- "enter: bssidx=%d, ifidx=%d\n", ifp->bssidx, ifp->ifidx);
if (WARN_ON(!ifp))
return;
+ brcmf_dbg(TRACE,
+ "enter: bssidx=%d, ifidx=%d\n", ifp->bssidx, ifp->ifidx);
+
if ((ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) &&
pq->len <= BRCMF_FWS_FLOWCONTROL_LOWATER)
brcmf_txflowblock_if(ifp,