| Message ID | 1426097094-6225-1-git-send-email-rmanohar@qti.qualcomm.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Kalle Valo |
| Headers | show |
Rajkumar Manoharan <rmanohar@qti.qualcomm.com> writes: > Since thermal daemon is unaware of the device state, it might > try to adjust the throttle state when the device is powered down. > So the driver caches the value and will configure it while > powering up the target. The cached value will be programed later > once the device is brought up. In such case, returning error > status is confusing and misleading the user application. Hence > moving the driver state check before sending wmi command to target. > > Reported-by: Matthias Kaehlcke <mka@google.com> > Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> What tree do you use as the baseline? Three-way merge doesn't work as sha1 ids are not found: Applying: ath10k: move driver state check before setting throttle fatal: sha1 information is lacking or useless (drivers/net/wireless/ath/ath10k/thermal.c). Repository lacks necessary blobs to fall back on 3-way merge. Cannot fall back to three-way merge. Patch failed at 0001 ath10k: move driver state check before setting throttle
On Fri, Mar 13, 2015 at 06:48:21PM +0200, Kalle Valo wrote: > Rajkumar Manoharan <rmanohar@qti.qualcomm.com> writes: > > > Since thermal daemon is unaware of the device state, it might > > try to adjust the throttle state when the device is powered down. > > So the driver caches the value and will configure it while > > powering up the target. The cached value will be programed later > > once the device is brought up. In such case, returning error > > status is confusing and misleading the user application. Hence > > moving the driver state check before sending wmi command to target. > > > > Reported-by: Matthias Kaehlcke <mka@google.com> > > Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> > > What tree do you use as the baseline? Three-way merge doesn't work as > sha1 ids are not found: > Will send rebased version. -Rajkumar -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/wireless/ath/ath10k/thermal.c b/drivers/net/wireless/ath/ath10k/thermal.c index 3720c86..c9475ac 100644 --- a/drivers/net/wireless/ath/ath10k/thermal.c +++ b/drivers/net/wireless/ath/ath10k/thermal.c @@ -50,7 +50,6 @@ ath10k_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev, unsigned long throttle_state) { 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", @@ -59,16 +58,9 @@ ath10k_thermal_set_cur_throttle_state(struct thermal_cooling_device *cdev, } mutex_lock(&ar->conf_mutex); ar->thermal.throttle_state = throttle_state; - - if (ar->state != ATH10K_STATE_ON) { - ret = -ENETDOWN; - goto out; - } - ath10k_thermal_set_throttling(ar); -out: mutex_unlock(&ar->conf_mutex); - return ret; + return 0; } static struct thermal_cooling_device_ops ath10k_thermal_ops = { @@ -190,6 +182,9 @@ void ath10k_thermal_set_throttling(struct ath10k *ar) lockdep_assert_held(&ar->conf_mutex); + if (ar->state != ATH10K_STATE_ON) + return; + period = ar->thermal.quiet_period; duration = (period * ar->thermal.throttle_state) / 100; enabled = duration ? 1 : 0;
Since thermal daemon is unaware of the device state, it might try to adjust the throttle state when the device is powered down. So the driver caches the value and will configure it while powering up the target. The cached value will be programed later once the device is brought up. In such case, returning error status is confusing and misleading the user application. Hence moving the driver state check before sending wmi command to target. Reported-by: Matthias Kaehlcke <mka@google.com> Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com> --- drivers/net/wireless/ath/ath10k/thermal.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-)