package/kernel/mac80211/patches/653-0040-rtl8xxxu-Disable-packet-DMA-aggregation-on-8188eu.patch

   1 From f435337a2fc97c97476d833700e4a8fd17d99007 Mon Sep 17 00:00:00 2001
   2 From: Jes Sorensen <Jes.Sorensen@redhat.com>
   3 Date: Wed, 10 Aug 2016 15:41:13 -0400
   4 Subject: [PATCH] rtl8xxxu: Disable packet DMA aggregation on 8188eu
   5
   6 For now disable packet DMA aggregation on the 8188eu, rather then
   7 risking the feature being left on by the init tables.
   8
   9 Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
  10 ---
  11  drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c | 14 ++++++++++++++
  12  1 file changed, 14 insertions(+)
  13
  14 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
  15 +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c
  16 @@ -461,6 +461,19 @@ void rtl8188eu_config_channel(struct iee
  17         }
  18  }
  19
  20 +void rtl8188eu_init_aggregation(struct rtl8xxxu_priv *priv)
  21 +{
  22 +       u8 agg_ctrl, usb_spec;
  23 +
  24 +       usb_spec = rtl8xxxu_read8(priv, REG_USB_SPECIAL_OPTION);
  25 +       usb_spec &= ~USB_SPEC_USB_AGG_ENABLE;
  26 +       rtl8xxxu_write8(priv, REG_USB_SPECIAL_OPTION, usb_spec);
  27 +
  28 +       agg_ctrl = rtl8xxxu_read8(priv, REG_TRXDMA_CTRL);
  29 +       agg_ctrl &= ~TRXDMA_CTRL_RXDMA_AGG_EN;
  30 +       rtl8xxxu_write8(priv, REG_TRXDMA_CTRL, agg_ctrl);
  31 +}
  32 +
  33  static int rtl8188eu_parse_efuse(struct rtl8xxxu_priv *priv)
  34  {
  35         struct rtl8188eu_efuse *efuse = &priv->efuse_wifi.efuse8188eu;
  36 @@ -1223,6 +1236,7 @@ struct rtl8xxxu_fileops rtl8188eu_fops =
  37         .phy_iq_calibrate = rtl8188eu_phy_iq_calibrate,
  38         .config_channel = rtl8188eu_config_channel,
  39         .parse_rx_desc = rtl8xxxu_parse_rxdesc16,
  40 +       .init_aggregation = rtl8188eu_init_aggregation,
  41         .enable_rf = rtl8188e_enable_rf,
  42         .disable_rf = rtl8188e_disable_rf,
  43         .usb_quirks = rtl8188e_usb_quirks,