package/kernel/mac80211/patches/650-0016-rtl8xxxu-gen1-Set-aggregation-timeout-REG_RXDMA_AGG_.patch

   1 From 0338642c5eeaaf03cd4a63e211b94596c559e6e5 Mon Sep 17 00:00:00 2001
   2 From: Jes Sorensen <Jes.Sorensen@redhat.com>
   3 Date: Wed, 22 Jun 2016 22:09:35 -0400
   4 Subject: [PATCH] rtl8xxxu: gen1: Set aggregation timeout (REG_RXDMA_AGG_PG_TH
   5  + 1) as well
   6
   7 gen2 chips as well as 8188eu seems to use this register for setting
   8 DMA timeout threshold values, however the 8192cu is using
   9 REG_USB_DMA_AGG_TO. Set both to be on the safe side.
  10
  11 Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
  12 ---
  13  drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 11 +++++++++--
  14  1 file changed, 9 insertions(+), 2 deletions(-)
  15
  16 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
  17 +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
  18 @@ -4410,7 +4410,7 @@ void rtl8xxxu_gen2_report_connect(struct
  19
  20  void rtl8xxxu_gen1_init_aggregation(struct rtl8xxxu_priv *priv)
  21  {
  22 -       u8 agg_ctrl, usb_spec, page_thresh;
  23 +       u8 agg_ctrl, usb_spec, page_thresh, timeout;
  24
  25         usb_spec = rtl8xxxu_read8(priv, REG_USB_SPECIAL_OPTION);
  26         usb_spec &= ~USB_SPEC_USB_AGG_ENABLE;
  27 @@ -4442,7 +4442,14 @@ void rtl8xxxu_gen1_init_aggregation(stru
  28
  29         page_thresh = (priv->fops->rx_agg_buf_size / 512);
  30         rtl8xxxu_write8(priv, REG_RXDMA_AGG_PG_TH, page_thresh);
  31 -       rtl8xxxu_write8(priv, REG_USB_DMA_AGG_TO, 4);
  32 +       /*
  33 +        * REG_RXDMA_AGG_PG_TH + 1 seems to be the timeout register on
  34 +        * gen2 chips and rtl8188eu. The rtl8723au seems unhappy if we
  35 +        * don't set it, so better set both.
  36 +        */
  37 +       timeout = 4;
  38 +       rtl8xxxu_write8(priv, REG_RXDMA_AGG_PG_TH + 1, timeout);
  39 +       rtl8xxxu_write8(priv, REG_USB_DMA_AGG_TO, timeout);
  40         priv->rx_buf_aggregation = 1;
  41  }
  42