diff options
| author | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-03-18 16:53:18 +0400 |
|---|---|---|
| committer | Emmanuel Grumbach <emmanuel.grumbach@intel.com> | 2014-03-18 23:15:40 +0400 |
| commit | f718c2df22b0059a0856b16562dea1b9ed28b23f (patch) | |
| tree | 9e00b424ad842e3ed8d7d6d39e35e8a5083b03a4 /drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c | |
| parent | 50df8a3065404b9b953b1ae1455dd991e04a9ab7 (diff) | |
| download | linux-f718c2df22b0059a0856b16562dea1b9ed28b23f.tar.xz | |
iwlwifi: mvm: fix theoretical NULL ptr dereference
mvmsta could have been NULL / ERR.
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c index f64e972191eb..9b59e1d7ae71 100644 --- a/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c +++ b/drivers/net/wireless/iwlwifi/mvm/debugfs-vif.c @@ -312,6 +312,11 @@ static ssize_t iwl_dbgfs_reduced_txp_write(struct ieee80211_vif *vif, mutex_lock(&mvm->mutex); mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id); + if (IS_ERR_OR_NULL(mvmsta)) { + mutex_unlock(&mvm->mutex); + return -ENOTCONN; + } + mvmsta->bt_reduced_txpower_dbg = false; ret = iwl_mvm_bt_coex_reduced_txp(mvm, mvmvif->ap_sta_id, reduced_tx_power); |