[PATCH rtw-next v4 2/7] wifi: rtw88: skip the dynamic CSI rate without a cfg_csi_rate op

[Ho Jie Feng <hjf3108@gmail.com>]

rtw_dynamic_csi_rate() runs from the watchdog for each vif that is a
SU or MU beamformee. new_csi_rate_idx is only written by the
cfg_csi_rate chip op, so on a chip without that op such as 88xxa,
an uninitialized value is compared with cur_csi_rpt_rate.

Return early when the chip has no cfg_csi_rate op.

Suggested-by: Luka Gejak <luka.gejak@linux.dev>
Signed-off-by: Ho Jie Feng <hjf3108@gmail.com>
---
 drivers/net/wireless/realtek/rtw88/main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
index e243738809..a8a603aaee 100644
--- a/drivers/net/wireless/realtek/rtw88/main.c
+++ b/drivers/net/wireless/realtek/rtw88/main.c
@@ -174,6 +174,9 @@ static void rtw_dynamic_csi_rate(struct rtw_dev *rtwdev, struct rtw_vif *rtwvif)
 	u8 fix_rate_enable = 0;
 	u8 new_csi_rate_idx;
 
+	if (!rtwdev->chip->ops->cfg_csi_rate)
+		return;
+
 	if (rtwvif->bfee.role != RTW_BFEE_SU &&
 	    rtwvif->bfee.role != RTW_BFEE_MU)
 		return;
-- 
2.53.0