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rtlwifi: rtl8723be: Fix loss of signal
authorLarry Finger <Larry.Finger@lwfinger.net>
Thu, 22 Feb 2018 20:28:59 +0000 (14:28 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 28 Mar 2018 16:24:42 +0000 (18:24 +0200)
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 patch | blob | blame | history

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c
index 4d47b97adfed9ed8e2870ba67dc527cab7da259d..0034ebd3e5babfdb95b3d2d72eeb4aaf3dcc0fe3 100644 (file)
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c
@@ -1123,7 +1123,8 @@ static void _rtl8723be_enable_aspm_back_door(struct ieee80211_hw *hw)
 
        /* 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