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From 17cb73ae89e15b60276f0b6583d4ed30b6bdeb4f Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Wed, 10 Aug 2016 15:41:13 -0400
Subject: [PATCH] rtl8xxxu: Disable packet DMA aggregation on 8188eu
For now disable packet DMA aggregation on the 8188eu, rather then
risking the feature being left on by the init tables.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
---
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
@@ -345,6 +345,19 @@ rtl8188e_set_tx_power(struct rtl8xxxu_pr
rtl8xxxu_write32(priv, REG_TX_AGC_A_MCS15_MCS12, mcs);
}
+void rtl8188eu_init_aggregation(struct rtl8xxxu_priv *priv)
+{
+ u8 agg_ctrl, usb_spec;
+
+ usb_spec = rtl8xxxu_read8(priv, REG_USB_SPECIAL_OPTION);
+ usb_spec &= ~USB_SPEC_USB_AGG_ENABLE;
+ rtl8xxxu_write8(priv, REG_USB_SPECIAL_OPTION, usb_spec);
+
+ agg_ctrl = rtl8xxxu_read8(priv, REG_TRXDMA_CTRL);
+ agg_ctrl &= ~TRXDMA_CTRL_RXDMA_AGG_EN;
+ rtl8xxxu_write8(priv, REG_TRXDMA_CTRL, agg_ctrl);
+}
+
static int rtl8188eu_parse_efuse(struct rtl8xxxu_priv *priv)
{
struct rtl8188eu_efuse *efuse = &priv->efuse_wifi.efuse8188eu;
@@ -1107,6 +1120,7 @@ struct rtl8xxxu_fileops rtl8188eu_fops =
.phy_iq_calibrate = rtl8188eu_phy_iq_calibrate,
.config_channel = rtl8xxxu_gen1_config_channel,
.parse_rx_desc = rtl8xxxu_parse_rxdesc16,
+ .init_aggregation = rtl8188eu_init_aggregation,
.enable_rf = rtl8188e_enable_rf,
.disable_rf = rtl8188e_disable_rf,
.usb_quirks = rtl8188e_usb_quirks,
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