package/kernel/mac80211/patches/658-0002-rtl8xxxu-Fix-rtl8192eu-driver-reload-issue.patch

   1 From 93064d0ae3e9d97c03a3aabd71e6048e1ac82f46 Mon Sep 17 00:00:00 2001
   2 From: Jes Sorensen <Jes.Sorensen@redhat.com>
   3 Date: Fri, 30 Sep 2016 19:18:34 -0400
   4 Subject: [PATCH] rtl8xxxu: Fix rtl8192eu driver reload issue
   5
   6 The 8192eu suffered from two issues when reloading the driver.
   7
   8 The same problems as with the 8723bu where REG_RX_WAIT_CCA bits 22 and
   9 23 didn't get set in rtl8192e_enable_rf().
  10
  11 In addition it also seems prone to issues when setting REG_RF_CTRL to
  12 0 intead of just disabling the RF_ENABLE bit. Similar to what was
  13 causing issues with the 8188eu.
  14
  15 With this patch I can successfully reload the driver and reassociate
  16 to an APi with an 8192eu dongle.
  17
  18 Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
  19 ---
  20  drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c | 8 +++++++-
  21  1 file changed, 7 insertions(+), 1 deletion(-)
  22
  23 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
  24 +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
  25 @@ -1461,7 +1461,9 @@ static int rtl8192eu_active_to_emu(struc
  26         int count, ret = 0;
  27
  28         /* Turn off RF */
  29 -       rtl8xxxu_write8(priv, REG_RF_CTRL, 0);
  30 +       val8 = rtl8xxxu_read8(priv, REG_RF_CTRL);
  31 +       val8 &= ~RF_ENABLE;
  32 +       rtl8xxxu_write8(priv, REG_RF_CTRL, val8);
  33
  34         /* Switch DPDT_SEL_P output from register 0x65[2] */
  35         val8 = rtl8xxxu_read8(priv, REG_LEDCFG2);
  36 @@ -1593,6 +1595,10 @@ static void rtl8192e_enable_rf(struct rt
  37         u32 val32;
  38         u8 val8;
  39
  40 +       val32 = rtl8xxxu_read32(priv, REG_RX_WAIT_CCA);
  41 +       val32 |= (BIT(22) | BIT(23));
  42 +       rtl8xxxu_write32(priv, REG_RX_WAIT_CCA, val32);
  43 +
  44         val8 = rtl8xxxu_read8(priv, REG_GPIO_MUXCFG);
  45         val8 |= BIT(5);
  46         rtl8xxxu_write8(priv, REG_GPIO_MUXCFG, val8);