From: Jingjun Wu <jingjun_wu@xxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxx> Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx> Cc: Stable <stable@xxxxxxxxxxxxxxx> --- John, I think this patch should be pushed to 3.3. The bug causes a nasty hit to the receive performance. I have been holding it to get feedback from the Redhat bugzilla, but none seems to be forthcoming. Larry --- Index: wireless-testing-new/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c =================================================================== --- wireless-testing-new.orig/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c +++ wireless-testing-new/drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c @@ -520,6 +520,10 @@ void rtl92c_dm_write_dig(struct ieee8021 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); -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
