Commit a9b89e25 authored by Jingjun Wu's avatar Jingjun Wu Committed by John W. Linville

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: default avatarJingjun Wu <jingjun_wu@realsil.com.cn>
Signed-off-by: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent da473b61
...@@ -520,6 +520,10 @@ void rtl92c_dm_write_dig(struct ieee80211_hw *hw) ...@@ -520,6 +520,10 @@ void rtl92c_dm_write_dig(struct ieee80211_hw *hw)
dm_digtable.cur_igvalue, dm_digtable.pre_igvalue, dm_digtable.cur_igvalue, dm_digtable.pre_igvalue,
dm_digtable.backoff_val); 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) { if (dm_digtable.pre_igvalue != dm_digtable.cur_igvalue) {
rtl_set_bbreg(hw, ROFDM0_XAAGCCORE1, 0x7f, rtl_set_bbreg(hw, ROFDM0_XAAGCCORE1, 0x7f,
dm_digtable.cur_igvalue); dm_digtable.cur_igvalue);
......
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