[PATCH AUTOSEL 6.12 406/486] wifi: rtw88: Fix __rtw_download_firmware() for RTL8814AU

[Sasha Levin <sashal@xxxxxxxxxx>]

From: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>

[ Upstream commit 8425f5c8f04dbcf11ade78f984a494fc0b90e7a0 ]

Don't call ltecoex_read_reg() and ltecoex_reg_write() when the
ltecoex_addr member of struct rtw_chip_info is NULL. The RTL8814AU
doesn't have this feature.

Signed-off-by: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
Acked-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Link: https://patch.msgid.link/55b5641f-094e-4f94-9f79-ac053733f2cf@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/wireless/realtek/rtw88/mac.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw88/mac.c b/drivers/net/wireless/realtek/rtw88/mac.c
index 564f5988ee82a..d1c4f5cdcb21d 100644
--- a/drivers/net/wireless/realtek/rtw88/mac.c
+++ b/drivers/net/wireless/realtek/rtw88/mac.c
@@ -783,7 +783,8 @@ static int __rtw_download_firmware(struct rtw_dev *rtwdev,
 	if (!check_firmware_size(data, size))
 		return -EINVAL;
 
-	if (!ltecoex_read_reg(rtwdev, 0x38, &ltecoex_bckp))
+	if (rtwdev->chip->ltecoex_addr &&
+	    !ltecoex_read_reg(rtwdev, 0x38, &ltecoex_bckp))
 		return -EBUSY;
 
 	wlan_cpu_enable(rtwdev, false);
@@ -801,7 +802,8 @@ static int __rtw_download_firmware(struct rtw_dev *rtwdev,
 
 	wlan_cpu_enable(rtwdev, true);
 
-	if (!ltecoex_reg_write(rtwdev, 0x38, ltecoex_bckp)) {
+	if (rtwdev->chip->ltecoex_addr &&
+	    !ltecoex_reg_write(rtwdev, 0x38, ltecoex_bckp)) {
 		ret = -EBUSY;
 		goto dlfw_fail;
 	}
-- 
2.39.5