From: Jingjun Wu Date: Sat, 3 Mar 2012 02:52:14 +0000 (-0600) Subject: rtlwifi: rtl8192ce: Fix loss of receive performance X-Git-Tag: v3.4-rc1~177^2~108^2~150 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a9b89e2567c743483e6354f64d7a7e3a8c101e9e;p=platform%2Fkernel%2Flinux-3.10.git 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 Signed-off-by: Larry Finger Cc: Stable Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c b/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c index 8646ff2..d8d73db 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);