From: Oleksij Rempel <external.Oleksij.Rempel@xxxxxxxxxxxx>
current code will handle -ETIMEDOUT as success which is probalbly wrong.
According to this comment I assume it is safe to handle -ETIMEDOUT as false:
drivers/net/wireless/ath/ath9k/calib.c
290 /*
291 * We timed out waiting for the noisefloor to load, probably due to an
292 * in-progress rx. Simply return here and allow the load plenty of time
293 * to complete before the next calibration interval. We need to avoid
294 * trying to load -50 (which happens below) while the previous load is
295 * still in progress as this can cause rx deafness. Instead by returning
296 * here, the baseband nf cal will just be capped by our present
297 * noisefloor until the next calibration timer.
298 */
Since no other error wariants are present, this patch is checking only
for (ret <= 0).
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Oleksij Rempel <external.Oleksij.Rempel@xxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/htc_drv_main.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index dab1323..172a9ff 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -794,8 +794,11 @@ void ath9k_htc_ani_work(struct work_struct *work)
common->ani.longcal_timer = timestamp;
}
- /* Short calibration applies only while caldone is false */
- if (!common->ani.caldone) {
+ /*
+ * Short calibration applies only while caldone
+ * is false or -ETIMEDOUT
+ */
+ if (common->ani.caldone <= 0) {
if ((timestamp - common->ani.shortcal_timer) >=
short_cal_interval) {
shortcal = true;
@@ -844,7 +847,11 @@ set_timer:
*/
cal_interval = ATH_LONG_CALINTERVAL;
cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
- if (!common->ani.caldone)
+ /*
+ * Short calibration applies only while caldone
+ * is false or -ETIMEDOUT
+ */
+ if (common->ani.caldone <= 0)
cal_interval = min(cal_interval, (u32)short_cal_interval);
ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
--
2.1.4
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