diff options
| author | Sanjay Kumar Konduri <sanjay.konduri@redpinesignals.com> | 2018-05-11 17:57:51 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-05-15 08:37:46 +0300 |
| commit | 54b5172087aeae61150835c91e68f084a9644f1c (patch) | |
| tree | 1a35c8f8017fae9bc1f1eb95b64772fec9b1ce1b /drivers/net/wireless/rsi | |
| parent | 1204aa17f3b4f63e67ac9b7c9afa9496485969c5 (diff) | |
| download | linux-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.c | 7 |
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; |