ath10k: cache throttle state when device is down

Allow driver to cache the throttle state when the devie is not
yet started. Configure the cached throttle state while powering
up the device. Since thermal daemon is unaware of the up/down cycle,
it assumes that device is throttled.

Reported-by: Matthias Kaehlcke <mka@google.com>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath10k/thermal.c b/drivers/net/wireless/ath/ath10k/thermal.c
index 604ea00..0b4cd3f 100644 (file)
--- a/drivers/net/wireless/ath/ath10k/thermal.c
+++ b/drivers/net/wireless/ath/ath10k/thermal.c
@@ -52,19 +52,19 @@ ath10k_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev,
        struct ath10k *ar = cdev->devdata;
        int ret = 0;
 
+       if (throttle_state > ATH10K_THERMAL_THROTTLE_MAX) {
+               ath10k_warn(ar, "throttle state %ld is exceeding the limit %d\n",
+                           throttle_state, ATH10K_THERMAL_THROTTLE_MAX);
+               return -EINVAL;
+       }
        mutex_lock(&ar->conf_mutex);
+       ar->thermal.throttle_state = throttle_state;
+
        if (ar->state != ATH10K_STATE_ON) {
                ret = -ENETDOWN;
                goto out;
        }
 
-       if (throttle_state > ATH10K_THERMAL_THROTTLE_MAX) {
-               ath10k_warn(ar, "throttle state %ld is exceeding the limit %d\n",
-                           throttle_state, ATH10K_THERMAL_THROTTLE_MAX);
-               ret = -EINVAL;
-               goto out;
-       }
-       ar->thermal.throttle_state = throttle_state;
        ath10k_thermal_set_throttling(ar);
 out:
        mutex_unlock(&ar->conf_mutex);