From 6bf3a083407b5d404d70efc3a5ac75b472e5efa9 Mon Sep 17 00:00:00 2001 From: Chih-Kang Chang Date: Tue, 9 Aug 2022 16:41:06 +0800 Subject: [PATCH] wifi: rtw88: add flag check before enter or leave IPS Enter or leave IPS controlled by mac80211 before driver support HW scan. After support HW scan, driver need to control IPS before start HW scan and scan complete, but mac80211 also ask driver enter or leave IPS. Therefore, we add flag check in IPS to prevent entering or leaving IPS twice. Signed-off-by: Chih-Kang Chang Signed-off-by: Ping-Ke Shih Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20220809084107.38137-7-pkshih@realtek.com --- drivers/net/wireless/realtek/rtw88/ps.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/realtek/rtw88/ps.c b/drivers/net/wireless/realtek/rtw88/ps.c index bfa64c038f5f0a..c93da743681fc5 100644 --- a/drivers/net/wireless/realtek/rtw88/ps.c +++ b/drivers/net/wireless/realtek/rtw88/ps.c @@ -19,14 +19,14 @@ static int rtw_ips_pwr_up(struct rtw_dev *rtwdev) rtw_err(rtwdev, "leave idle state failed\n"); rtw_set_channel(rtwdev); - clear_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags); return ret; } int rtw_enter_ips(struct rtw_dev *rtwdev) { - set_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags); + if (test_and_set_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags)) + return 0; rtw_coex_ips_notify(rtwdev, COEX_IPS_ENTER); @@ -50,6 +50,9 @@ int rtw_leave_ips(struct rtw_dev *rtwdev) { int ret; + if (!test_and_clear_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags)) + return 0; + rtw_hci_link_ps(rtwdev, false); ret = rtw_ips_pwr_up(rtwdev);