From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AIpwx49NztvcCPXEIpdPyI0A6YgulaRe9UdW4TvpkM0dgOZ15Oiay3pa/uPidQKQCCXVZVBKvV7C ARC-Seal: i=1; a=rsa-sha256; t=1522168318; cv=none; d=google.com; s=arc-20160816; b=UXThqOBguDU4KoD+dxJ3TyrF3A0/SXVR72ShSojgvVFqseuyIJkMwrUOq/LRe3f+t7 uEKhC9tpy8/3IXauvNAa8kH2EiRq8XKdG7TLLDDPn0GRFfP8O5gE6ROcWG3CGI/nElvk YkpR4nyzYSXxO4MDVXkaqnDyEkjAhbHX8BNErVU2dtNh+Z1O1WZC/INnp8IqPW91EsDX QnGPHluY3l0/M69ONdPEve3B5AjKykwH931PGQpdxdfbJzXas+iPyb3VdDqJZo71i751 pIMGQXtAL2kvJ+b35X57YU+fB/IxQJg9pVKecHJ+QYSun4bmWxbXT/KEJMCnotCJs6ZJ yBew== 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=BnGjxc2YKBxXIFBsE+pNo+yW4k/OrPqlOwZq/PpFCu8=; b=DNA0tg0/uo5lEh8mTr4ew4JRhI+vEh+/dL1K09/I85CWoTfezZGMgCcwXLUD2Cbw11 GQIdwvlxlfuBX/6vPc653PKDhgeo26X3+lYNIP0w/IEcjDqZ/3EyONP+MpBNhYgYtA/E WIW9C6EPuRons1W/uL5cobmfrtZ0M9SrzTr1kOGKiqOZzgXSqgk48ITyxz7pqXVMFyAF lTWqnjIAMrtkhkFosd4NDckgCfNsK7uOxrvR1HGXSfll9hmrQnPFXYovzJTT/I2oWgZ3 FZRQEWGWtig+9QKvuortxosmTDrUx+g5V3SwXY+hrpzG2p7To44xvoh24GqdpLU99bJG zU7Q== 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 4.9 36/67] rtlwifi: rtl8723be: Fix loss of signal Date: Tue, 27 Mar 2018 18:27:28 +0200 Message-Id: <20180327162728.987281107@linuxfoundation.org> X-Mailer: git-send-email 2.16.3 In-Reply-To: <20180327162726.702411083@linuxfoundation.org> References: <20180327162726.702411083@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?1596109166365571543?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-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 @@ -1125,7 +1125,8 @@ 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