From b513cac22ad6527bd85042766afa8eacf1adffbe Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Wed, 2 Dec 2015 11:45:10 +0000 Subject: [PATCH] brcmfmac: only lock and unlock fws if fws is not null There is a null ptr check for fws to set bcmc_credit_check, however, there a lock and unlock on fws should only performed if fwts is also not null to also avoid a potential null pointer deference. Signed-off-by: Colin Ian King Acked-by: Arend van Spriel Signed-off-by: Kalle Valo --- .../net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c index ffdc7f82df4b..e5f5fac9f9b3 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwsignal.c @@ -1609,10 +1609,11 @@ static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp, { struct brcmf_fws_info *fws = ifp->drvr->fws; - brcmf_fws_lock(fws); - if (fws) + if (fws) { + brcmf_fws_lock(fws); fws->bcmc_credit_check = true; - brcmf_fws_unlock(fws); + brcmf_fws_unlock(fws); + } return 0; }