This is a note to let you know that I've just added the patch titled
rtlwifi: rtl8723be: Fix loss of signal
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: rtlwifi-rtl8723be-fix-loss-of-signal.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 78dc897b7ee67205423dbbc6b56be49fb18d15b5 Mon Sep 17 00:00:00 2001
From: Larry Finger Larry.Finger@lwfinger.net Date: Thu, 22 Feb 2018 14:28:59 -0600 Subject: rtlwifi: rtl8723be: Fix loss of signal
From: Larry Finger Larry.Finger@lwfinger.net
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 Larry.Finger@lwfinger.net Cc: Stable stable@vger.kernel.org Tested-by: James Cameron quozl@laptop.org Signed-off-by: Kalle Valo kvalo@codeaurora.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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
Patches currently in stable-queue which might be from Larry.Finger@lwfinger.net are
queue-4.9/rtlwifi-rtl8723be-fix-loss-of-signal.patch