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| author | Sanjay Kumar Konduri <sanjay.konduri@redpinesignals.com> | 2018-05-11 20:27:51 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-03 07:47:51 +0200 |
| commit | 0430c9e0991c3e82f224514a1164cb6c192c4ecf (patch) | |
| tree | 9da8aa7ccc628ece0e1ff09e1a1833e5bb9d237a /drivers/net | |
| parent | a4c1d404da853a568ae8fc62b7063a76796cb96c (diff) | |
| download | linux-stable-0430c9e0991c3e82f224514a1164cb6c192c4ecf.tar.gz linux-stable-0430c9e0991c3e82f224514a1164cb6c192c4ecf.tar.bz2 linux-stable-0430c9e0991c3e82f224514a1164cb6c192c4ecf.zip | |
rsi: Add null check for virtual interfaces in wowlan config
[ Upstream commit 54b5172087aeae61150835c91e68f084a9644f1c ]
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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net')
| -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 32f5cb46fd4f..8f83303365c8 100644 --- a/drivers/net/wireless/rsi/rsi_91x_mac80211.c +++ b/drivers/net/wireless/rsi/rsi_91x_mac80211.c @@ -1788,10 +1788,15 @@ 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; |