From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx4/aNEujCo/16TaueZWsJ6LJrAWhgq+u3hQt/Gy3uuc6CZoRvVWnso1/pqLYUIReIYjSbFIB ARC-Seal: i=1; a=rsa-sha256; t=1522168891; cv=none; d=google.com; s=arc-20160816; b=UeiqlAVK1WEQFyywPN/VVRHISSq6D8LDuCp6pPp2qA7X5/vwQTyyZHATebmBdMG8U3 7J7uzVUqNm7fSo+pV9hNUiT3vnIkUPoK7LGbY9YpK2MQQOPa5J7uawJSbpzoUZ09SQZA gYWjzg2QSTOASepjSaXs09LuiAIus/PnsIXNzO1yY0jFHP2Q7La++wI/hwjnwfDQ5HVh br3CiV2dt7XNTZ/oWKjhSufZy5/K4kkc2g+uEhC07Fi9yVx7xMspLru1QIX1akoGIrOV iWDsiG93MGdINEupVHogYHpGm3UdvGi7pDi3vGSjoTNjY4gAqN3me5dAj3COA0cby6it oRQQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=mime-version:user-agent:references:in-reply-to:message-id:date :subject:cc:to:from:arc-authentication-results; bh=4CW3bmwc48XSCthywazGKNGnidg2Z+7MStGdvlOUQKQ=; b=XZgfPfwuOt3lyK9S+vBKI8wmP4+QNa+Y7zzxnDkhLJCkVXLJf5R05lEWnpFZGVlexU V4sYWs60xCzZyWZphdDirY2sMa3MT5ME87trLfH+nNAYaRpfEEYEe/eriP2Ks/ONxMce /9Bu50G1LnR+kOE8BWWpOXNGbjiK2D2/2BZU93Mrzb874FN2EM1W3ZXsJVsppwk4VZCI blPB38ln/4UIaO+65NEMQOqG2jA2wJB/qVR40iOzrEuuA17dE5TM9umN6ouVWy5B552L yspQdkZQOEl9bRrZl05/Laxvx21ykY7DeKnjeS1raa3IoWN7vcznONdjrrMqSOR3KuBn s+2A== ARC-Authentication-Results: i=1; mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org Authentication-Results: mx.google.com; spf=softfail (google.com: domain of transitioning gregkh@linuxfoundation.org does not designate 90.92.61.202 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Larry Finger , James Cameron , Kalle Valo Subject: [PATCH 4.15 068/105] rtlwifi: rtl8723be: Fix loss of signal Date: Tue, 27 Mar 2018 18:27:48 +0200 Message-Id: <20180327162802.038887372@linuxfoundation.org> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20180327162757.813009222@linuxfoundation.org> References: <20180327162757.813009222@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-LABELS: =?utf-8?b?IlxcU2VudCI=?= X-GMAIL-THRID: =?utf-8?q?1596109011873420590?= X-GMAIL-MSGID: =?utf-8?q?1596109767491092451?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Larry Finger commit 78dc897b7ee67205423dbbc6b56be49fb18d15b5 upstream. In commit c713fb071edc ("rtlwifi: rtl8821ae: Fix connection lost problem correctly") a problem in rtl8821ae that caused loss of signal was fixed. That same problem has now been reported for rtl8723be. Accordingly, the ASPM L1 latency has been increased from 0 to 7 to fix the instability. Signed-off-by: Larry Finger Cc: Stable Tested-by: James Cameron Signed-off-by: Kalle Valo Signed-off-by: Greg Kroah-Hartman --- drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c @@ -1124,7 +1124,8 @@ static void _rtl8723be_enable_aspm_back_ /* Configuration Space offset 0x70f BIT7 is used to control L0S */ tmp8 = _rtl8723be_dbi_read(rtlpriv, 0x70f); - _rtl8723be_dbi_write(rtlpriv, 0x70f, tmp8 | BIT(7)); + _rtl8723be_dbi_write(rtlpriv, 0x70f, tmp8 | BIT(7) | + ASPM_L1_LATENCY << 3); /* Configuration Space offset 0x719 Bit3 is for L1 * BIT4 is for clock request