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Date: Mon, 30 May 2022 15:54:57 +0200 From: Sascha Hauer <s.hauer@...gutronix.de> To: linux-wireless@...r.kernel.org Cc: Neo Jou <neojou@...il.com>, Hans Ulli Kroll <linux@...i-kroll.de>, Ping-Ke Shih <pkshih@...ltek.com>, Yan-Hsuan Chuang <tony0620emma@...il.com>, Kalle Valo <kvalo@...nel.org>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Martin Blumenstingl <martin.blumenstingl@...glemail.com>, kernel@...gutronix.de, Johannes Berg <johannes@...solutions.net>, Sascha Hauer <s.hauer@...gutronix.de> Subject: [PATCH v2 10/10] rtw88: disable powersave modes for USB devices The powersave modes do not work with USB devices (tested with a RTW8822CU) properly. With powersave modes enabled the driver issues messages like: rtw_8822cu 1-1:1.2: firmware failed to leave lps state rtw_8822cu 1-1:1.2: timed out to flush queue 3 Also ping round trip times increase significantly from 1..2ms to 10..200ms. Until this has been resolved disable the powersave modes for USB devices. Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de> --- drivers/net/wireless/realtek/rtw88/mac80211.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c index 3c07485d6ba47..fb5faf3bf1eed 100644 --- a/drivers/net/wireless/realtek/rtw88/mac80211.c +++ b/drivers/net/wireless/realtek/rtw88/mac80211.c @@ -89,7 +89,8 @@ static int rtw_ops_config(struct ieee80211_hw *hw, u32 changed) } if (changed & IEEE80211_CONF_CHANGE_PS) { - if (hw->conf.flags & IEEE80211_CONF_PS) { + if (hw->conf.flags & IEEE80211_CONF_PS && + rtw_hci_type(rtwdev) != RTW_HCI_TYPE_USB) { rtwdev->ps_enabled = true; } else { rtwdev->ps_enabled = false; -- 2.30.2
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