This read_poll_timeout_atomic() with a delay of 1 µs and a timeout of
1000000 µs can take ~250 seconds in the worst case because sending a
USB control message takes ~250 µs.
Increase the delay to 250 µs in order to reduce the maximum polling
time to ~2 seconds.
This problem was observed with RTL8851BU while suspending to RAM with
WOWLAN enabled. The computer sat for 4 minutes with a black screen
before suspending.
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
---
drivers/net/wireless/realtek/rtw89/fw.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtw89/fw.c b/drivers/net/wireless/realtek/rtw89/fw.c
index c613431e754f..27d84464347b 100644
--- a/drivers/net/wireless/realtek/rtw89/fw.c
+++ b/drivers/net/wireless/realtek/rtw89/fw.c
@@ -6665,7 +6665,7 @@ static int rtw89_fw_read_c2h_reg(struct rtw89_dev *rtwdev,
info->id = RTW89_FWCMD_C2HREG_FUNC_NULL;
- ret = read_poll_timeout_atomic(rtw89_read8, val, val, 1,
+ ret = read_poll_timeout_atomic(rtw89_read8, val, val, 250,
RTW89_C2H_TIMEOUT, false, rtwdev,
chip->c2h_ctrl_reg);
if (ret) {
--
2.50.0
