From a5c92f0b6a88a8abe3840869425f1372591a762c Mon Sep 17 00:00:00 2001 From: Wei-Ning Huang Date: Wed, 30 Mar 2016 18:14:55 +0800 Subject: [PATCH] mwifiex: fix NULL pointer dereference error In mwifiex_enable_hs, we need to check if priv->wdev.wiphy->wowlan_config is NULL before accessing its member. This sometimes cause kernel panic when suspend/resume. Signed-off-by: Wei-Ning Huang Signed-off-by: Kalle Valo --- drivers/net/wireless/marvell/mwifiex/sta_ioctl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c b/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c index d5c56eb9e985..d8de432d46a2 100644 --- a/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c +++ b/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c @@ -509,7 +509,8 @@ int mwifiex_enable_hs(struct mwifiex_adapter *adapter) if (priv && priv->sched_scanning) { #ifdef CONFIG_PM - if (!priv->wdev.wiphy->wowlan_config->nd_config) { + if (priv->wdev.wiphy->wowlan_config && + !priv->wdev.wiphy->wowlan_config->nd_config) { #endif mwifiex_dbg(adapter, CMD, "aborting bgscan!\n"); mwifiex_stop_bg_scan(priv);