From: Ping-Ke Shih pkshih@realtek.com
commit 4a267bc5ea8f159b614d0549030216d0434eccca upstream.
Use power state to decide whether we can enter or leave IPS accurately, and then prevent to power on/off twice.
The commit 6bf3a083407b ("wifi: rtw88: add flag check before enter or leave IPS") would like to prevent this as well, but it still can't entirely handle all cases. The exception is that WiFi gets connected and does suspend/resume, it will power on twice and cause it failed to power on after resuming, like:
rtw_8723de 0000:03:00.0: failed to poll offset=0x6 mask=0x2 value=0x2 rtw_8723de 0000:03:00.0: mac power on failed rtw_8723de 0000:03:00.0: failed to power on mac rtw_8723de 0000:03:00.0: leave idle state failed rtw_8723de 0000:03:00.0: failed to leave ips state rtw_8723de 0000:03:00.0: failed to leave idle state rtw_8723de 0000:03:00.0: failed to send h2c command
To fix this, introduce new flag RTW_FLAG_POWERON to reflect power state, and call rtw_mac_pre_system_cfg() to configure registers properly between power-off/-on.
Reported-by: Paul Gover pmw.gover@yahoo.co.uk Link: https://bugzilla.kernel.org/show_bug.cgi?id=217016 Fixes: 6bf3a083407b ("wifi: rtw88: add flag check before enter or leave IPS") Cc: Stable@vger.kernel.org Signed-off-by: Ping-Ke Shih pkshih@realtek.com Signed-off-by: Kalle Valo kvalo@kernel.org Link: https://lore.kernel.org/r/20230216053633.20366-1-pkshih@realtek.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/wireless/realtek/rtw88/coex.c | 2 +- drivers/net/wireless/realtek/rtw88/mac.c | 10 ++++++++++ drivers/net/wireless/realtek/rtw88/main.h | 2 +- drivers/net/wireless/realtek/rtw88/ps.c | 4 ++-- drivers/net/wireless/realtek/rtw88/wow.c | 2 +- 5 files changed, 15 insertions(+), 5 deletions(-)
--- a/drivers/net/wireless/realtek/rtw88/coex.c +++ b/drivers/net/wireless/realtek/rtw88/coex.c @@ -4057,7 +4057,7 @@ void rtw_coex_display_coex_info(struct r rtwdev->stats.tx_throughput, rtwdev->stats.rx_throughput); seq_printf(m, "%-40s = %u/ %u/ %u\n", "IPS/ Low Power/ PS mode", - test_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags), + !test_bit(RTW_FLAG_POWERON, rtwdev->flags), test_bit(RTW_FLAG_LEISURE_PS_DEEP, rtwdev->flags), rtwdev->lps_conf.mode);
--- a/drivers/net/wireless/realtek/rtw88/mac.c +++ b/drivers/net/wireless/realtek/rtw88/mac.c @@ -273,6 +273,11 @@ static int rtw_mac_power_switch(struct r if (rtw_pwr_seq_parser(rtwdev, pwr_seq)) return -EINVAL;
+ if (pwr_on) + set_bit(RTW_FLAG_POWERON, rtwdev->flags); + else + clear_bit(RTW_FLAG_POWERON, rtwdev->flags); + return 0; }
@@ -335,6 +340,11 @@ int rtw_mac_power_on(struct rtw_dev *rtw ret = rtw_mac_power_switch(rtwdev, true); if (ret == -EALREADY) { rtw_mac_power_switch(rtwdev, false); + + ret = rtw_mac_pre_system_cfg(rtwdev); + if (ret) + goto err; + ret = rtw_mac_power_switch(rtwdev, true); if (ret) goto err; --- a/drivers/net/wireless/realtek/rtw88/main.h +++ b/drivers/net/wireless/realtek/rtw88/main.h @@ -356,7 +356,7 @@ enum rtw_flags { RTW_FLAG_RUNNING, RTW_FLAG_FW_RUNNING, RTW_FLAG_SCANNING, - RTW_FLAG_INACTIVE_PS, + RTW_FLAG_POWERON, RTW_FLAG_LEISURE_PS, RTW_FLAG_LEISURE_PS_DEEP, RTW_FLAG_DIG_DISABLE, --- a/drivers/net/wireless/realtek/rtw88/ps.c +++ b/drivers/net/wireless/realtek/rtw88/ps.c @@ -25,7 +25,7 @@ static int rtw_ips_pwr_up(struct rtw_dev
int rtw_enter_ips(struct rtw_dev *rtwdev) { - if (test_and_set_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags)) + if (!test_bit(RTW_FLAG_POWERON, rtwdev->flags)) return 0;
rtw_coex_ips_notify(rtwdev, COEX_IPS_ENTER); @@ -50,7 +50,7 @@ int rtw_leave_ips(struct rtw_dev *rtwdev { int ret;
- if (!test_and_clear_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags)) + if (test_bit(RTW_FLAG_POWERON, rtwdev->flags)) return 0;
rtw_hci_link_ps(rtwdev, false); --- a/drivers/net/wireless/realtek/rtw88/wow.c +++ b/drivers/net/wireless/realtek/rtw88/wow.c @@ -592,7 +592,7 @@ static int rtw_wow_leave_no_link_ps(stru if (rtw_get_lps_deep_mode(rtwdev) != LPS_DEEP_MODE_NONE) rtw_leave_lps_deep(rtwdev); } else { - if (test_bit(RTW_FLAG_INACTIVE_PS, rtwdev->flags)) { + if (!test_bit(RTW_FLAG_POWERON, rtwdev->flags)) { rtw_wow->ips_enabled = true; ret = rtw_leave_ips(rtwdev); if (ret)