From: Cheng-Chieh Hsieh <cj.hsieh@xxxxxxxxxxx>
DCFO tracking compensate the CFO (carrier frequency offset) by digital
hardware that provides fine CFO estimation. Although the avg_cfo which
is a coarse information becomes zero, still we need DCFO tracking to
compensate the residual CFO. However, the original flow skips the case
when avg_cfo is zero, so we fix it to have expected performance.
Signed-off-by: Cheng-Chieh Hsieh <cj.hsieh@xxxxxxxxxxx>
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw89/phy.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c
index c7d8faa6265c..3b671a314e60 100644
--- a/drivers/net/wireless/realtek/rtw89/phy.c
+++ b/drivers/net/wireless/realtek/rtw89/phy.c
@@ -2634,6 +2634,10 @@ static void rtw89_phy_cfo_crystal_cap_adjust(struct rtw89_dev *rtwdev,
s32 cfo_abs = abs(curr_cfo);
int sign;
+ if (curr_cfo == 0) {
+ rtw89_debug(rtwdev, RTW89_DBG_CFO, "curr_cfo=0\n");
+ return;
+ }
if (!cfo->is_adjust) {
if (cfo_abs > CFO_TRK_ENABLE_TH)
cfo->is_adjust = true;
@@ -2830,10 +2834,6 @@ static void rtw89_phy_cfo_dm(struct rtw89_dev *rtwdev)
new_cfo = rtw89_phy_average_cfo_calc(rtwdev);
else
new_cfo = rtw89_phy_multi_sta_cfo_calc(rtwdev);
- if (new_cfo == 0) {
- rtw89_debug(rtwdev, RTW89_DBG_CFO, "curr_cfo=0\n");
- return;
- }
if (cfo->divergence_lock_en) {
cfo->lock_cnt++;
if (cfo->lock_cnt > CFO_PERIOD_CNT) {
--
2.25.1
