iwlwifi: mvm: fix imbalanced locking in iwl_mvm_start_get_nvm()

If iwl_transt_start_hw() failed, we were returning without calling
wiphy_unlock() and rtnl_unlock(), causing a locking imbalance:

drivers/net/wireless/intel/iwlwifi/mvm/ops.c:686:12: warning: context imbalance in 'iwl_mvm_start_get_nvm' - wrong count at exit

Fix that by adding the unlock calls.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20211219090128.42417-2-luca@coelho.fi

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
index 9bd869b8a974ad5063e475cdd348c142c9af8640..3941baa3eda3eb9b0e37e6a092d67eaaf8be307b 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
@@ -718,6 +718,8 @@ get_nvm_from_fw:
        ret = iwl_trans_start_hw(mvm->trans);
        if (ret) {
                mutex_unlock(&mvm->mutex);
+               wiphy_unlock(mvm->hw->wiphy);
+               rtnl_unlock();
                return ret;
        }