summaryrefslogtreecommitdiff
path: root/drivers/net/wireless/rsi
diff options
context:
space:
mode:
authorSanjay Kumar Konduri <sanjay.konduri@redpinesignals.com>2018-05-11 17:57:51 +0300
committerKalle Valo <kvalo@codeaurora.org>2018-05-15 08:37:46 +0300
commit54b5172087aeae61150835c91e68f084a9644f1c (patch)
tree1a35c8f8017fae9bc1f1eb95b64772fec9b1ce1b /drivers/net/wireless/rsi
parent1204aa17f3b4f63e67ac9b7c9afa9496485969c5 (diff)
downloadlinux-54b5172087aeae61150835c91e68f084a9644f1c.tar.xz
rsi: Add null check for virtual interfaces in wowlan config
When the "poweroff" command is executed after wowlan enabled, we have observed a system crash. In the system "poweroff" sequence, network-manager is sent to inactive state by cleaning up the network interfaces, using rsi_mac80211_remove_interface() and when driver tries to access those network interfaces in rsi_wowlan_config() which was invoked by SDIO shutdown, results in a crash. Added a NULL check before accessing the network interfaces in rsi_wowlan_config(). Signed-off-by: Sanjay Kumar Konduri <sanjay.konduri@redpinesignals.com> Signed-off-by: Siva Rebbagondla <siva.rebbagondla@redpinesignals.com> Signed-off-by: Sushant Kumar Mishra <sushant.mishra@redpinesignals.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/rsi')
-rw-r--r--drivers/net/wireless/rsi/rsi_91x_mac80211.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/net/wireless/rsi/rsi_91x_mac80211.c b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
index 80e7f4f4f188..743706eeffa2 100644
--- a/drivers/net/wireless/rsi/rsi_91x_mac80211.c
+++ b/drivers/net/wireless/rsi/rsi_91x_mac80211.c
@@ -1804,10 +1804,15 @@ int rsi_config_wowlan(struct rsi_hw *adapter, struct cfg80211_wowlan *wowlan)
struct rsi_common *common = adapter->priv;
u16 triggers = 0;
u16 rx_filter_word = 0;
- struct ieee80211_bss_conf *bss = &adapter->vifs[0]->bss_conf;
+ struct ieee80211_bss_conf *bss = NULL;
rsi_dbg(INFO_ZONE, "Config WoWLAN to device\n");
+ if (!adapter->vifs[0])
+ return -EINVAL;
+
+ bss = &adapter->vifs[0]->bss_conf;
+
if (WARN_ON(!wowlan)) {
rsi_dbg(ERR_ZONE, "WoW triggers not enabled\n");
return -EINVAL;