diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2017-03-22 22:00:10 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 19:48:20 +0200 |
| commit | 87a9c569fea9d88a5a47064a9fb6720707010114 (patch) | |
| tree | c488f3d08260f3da513f2cd61ee47dc65f452e8a /drivers/net/wireless/intel | |
| parent | 6dc9a4b33b355c4bddb994b0abf1982a798ea1f4 (diff) | |
iwlwifi: tt: move ucode_loaded check under mutex
[ Upstream commit d9954405758a0cbbe258d9b4d4dc12a06fa48a28 ]
The ucode_loaded check should be under the mutex, since it can
otherwise change state after we looked at it and before we got
the mutex. Fix that.
Fixes: 5c89e7bc557e ("iwlwifi: mvm: add registration to cooling device")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/wireless/intel')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/tt.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c index bec7d9c46087..c5203568a47a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c @@ -790,11 +790,13 @@ static int iwl_mvm_tcool_set_cur_state(struct thermal_cooling_device *cdev, struct iwl_mvm *mvm = (struct iwl_mvm *)(cdev->devdata); int ret; - if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) - return -EIO; - mutex_lock(&mvm->mutex); + if (!mvm->ucode_loaded || !(mvm->cur_ucode == IWL_UCODE_REGULAR)) { + ret = -EIO; + goto unlock; + } + if (new_state >= ARRAY_SIZE(iwl_mvm_cdev_budgets)) { ret = -EINVAL; goto unlock; |