From: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
In set_channel() callback handler, "priv" pointer is derived from
net_device. Sometimes net_device pointer coming from the stack
is NULL which causes kernel crash.
This patch fixes the problem by deriving "priv" from wiphy
when net_device pointer is NULL.
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
Signed-off-by: Bing Zhao <bzhao@xxxxxxxxxxx>
---
drivers/net/wireless/mwifiex/cfg80211.c | 7 ++++++-
1 files changed, 6 insertions(+), 1 deletions(-)
diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c
index 6fef492..54e45c8 100644
--- a/drivers/net/wireless/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/mwifiex/cfg80211.c
@@ -376,7 +376,12 @@ mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type)
{
- struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
+ struct mwifiex_private *priv;
+
+ if (dev)
+ priv = mwifiex_netdev_get_priv(dev);
+ else
+ priv = mwifiex_cfg80211_get_priv(wiphy);
if (priv->media_connected) {
wiphy_err(wiphy, "This setting is valid only when station "
--
1.7.0.2
--
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