From a9b89e2567c743483e6354f64d7a7e3a8c101e9e Mon Sep 17 00:00:00 2001
From: Jingjun Wu <jingjun_wu@realsil.com.cn>
Date: Fri, 2 Mar 2012 20:52:14 -0600
Subject: [PATCH] rtlwifi: rtl8192ce: Fix loss of receive performance
Driver rtl8192ce when used with the RTL8188CE device would start at about
20 Mbps on a 54 Mbps connection, but quickly drop to 1 Mbps. One of the
symptoms is that the AP would need to retransmit each packet 4 of 5 times
before the driver would acknowledge it. Recovery is possible only by
unloading and reloading the driver. This problem was reported at
https://bugzilla.redhat.com/show_bug.cgi?id=770207.
The problem is due to a missing update of the gain setting.
Signed-off-by: Jingjun Wu <jingjun_wu@realsil.com.cn>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c b/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c
index 8646ff2a55ce..d8d73dbb5780 100644
--- a/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c
+++ b/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c
@@ -520,6 +520,10 @@ void rtl92c_dm_write_dig(struct ieee80211_hw *hw)
dm_digtable.cur_igvalue, dm_digtable.pre_igvalue,
dm_digtable.backoff_val);
+ dm_digtable.cur_igvalue += 2;
+ if (dm_digtable.cur_igvalue > 0x3f)
+ dm_digtable.cur_igvalue = 0x3f;
+
if (dm_digtable.pre_igvalue != dm_digtable.cur_igvalue) {
rtl_set_bbreg(hw, ROFDM0_XAAGCCORE1, 0x7f,
dm_digtable.cur_igvalue);
--
2.34.1