kernel: add missing config symbols for 4.9
[librecmc/librecmc.git] / package / kernel / mac80211 / patches / 651-0002-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);