linux-kernel - [PATCH 4.2.y-ckt 091/206] rtlwifi: Fix logic error in enter/exit power-save mode

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Message-Id: <1465507015-23052-92-git-send-email-kamal@canonical.com>
Date:	Thu,  9 Jun 2016 14:15:00 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Wang YanQing <udknight@...il.com>,
	Kalle Valo <kvalo@...eaurora.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 4.2.y-ckt 091/206] rtlwifi: Fix logic error in enter/exit power-save mode

4.2.8-ckt12 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: wang yanqing <udknight@...il.com>

commit 873ffe154ae074c46ed2d72dbd9a2a99f06f55b4 upstream.

In commit a269913c52ad ("rtlwifi: Rework rtl_lps_leave() and
rtl_lps_enter() to use work queue"), the tests for enter/exit
power-save mode were inverted. With this change applied, the
wifi connection becomes much more stable.

Fixes: a269913c52ad ("rtlwifi: Rework rtl_lps_leave() and rtl_lps_enter() to use work queue")
Signed-off-by: Wang YanQing <udknight@...il.com>
Acked-by: Larry Finger <Larry.Finger@...inger.net>
Signed-off-by: Kalle Valo <kvalo@...eaurora.org>
[ kamal: backport to 4.2-stable: files moved ]
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/net/wireless/rtlwifi/base.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/rtlwifi/base.c b/drivers/net/wireless/rtlwifi/base.c
index 0517a4f..7a40d8d 100644
--- a/drivers/net/wireless/rtlwifi/base.c
+++ b/drivers/net/wireless/rtlwifi/base.c
@@ -1660,9 +1660,9 @@ void rtl_watchdog_wq_callback(void *data)
 		if (((rtlpriv->link_info.num_rx_inperiod +
 		      rtlpriv->link_info.num_tx_inperiod) > 8) ||
 		    (rtlpriv->link_info.num_rx_inperiod > 2))
-			rtl_lps_enter(hw);
-		else
 			rtl_lps_leave(hw);
+		else
+			rtl_lps_enter(hw);
 	}
 
 	rtlpriv->link_info.num_rx_inperiod = 0;
-- 
2.7.4