diff options
Diffstat (limited to 'package/kernel/mac80211/patches/657-0055-rtl8xxxu-Fix-reloading-of-driver-for-8188eu-devices.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/657-0055-rtl8xxxu-Fix-reloading-of-driver-for-8188eu-devices.patch | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/657-0055-rtl8xxxu-Fix-reloading-of-driver-for-8188eu-devices.patch b/package/kernel/mac80211/patches/657-0055-rtl8xxxu-Fix-reloading-of-driver-for-8188eu-devices.patch new file mode 100644 index 0000000000..0a55888fd3 --- /dev/null +++ b/package/kernel/mac80211/patches/657-0055-rtl8xxxu-Fix-reloading-of-driver-for-8188eu-devices.patch @@ -0,0 +1,72 @@ +From 8e911ff6eeeb1607dbc05d1782fd9c5cb54db068 Mon Sep 17 00:00:00 2001 +From: Jes Sorensen <Jes.Sorensen@redhat.com> +Date: Wed, 14 Sep 2016 14:10:42 -0400 +Subject: [PATCH] rtl8xxxu: Fix reloading of driver for 8188eu devices + +For 8188eu, once the MAC is asked to power down by setting +APS_FSMCO_MAC_OFF, there seems to be no way to bring it back to life. + +In addition, only disable RF_ENABLE in RF_CTRL rather than all bits. + +This was spotted by Andrea Merello who noticed that if we dropped the +call to rtl8188eu_active_to_emu() reloading started working. + +Reported-by: Andrea Merello <andrea.merello@gmail.com> +Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> +--- + .../net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c | 29 +++++----------------- + 1 file changed, 6 insertions(+), 23 deletions(-) + +--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c ++++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8188e.c +@@ -1160,37 +1160,18 @@ exit: + static int rtl8188eu_active_to_emu(struct rtl8xxxu_priv *priv) + { + u8 val8; +- int count, ret = 0; + + /* Turn off RF */ +- rtl8xxxu_write8(priv, REG_RF_CTRL, 0); ++ val8 = rtl8xxxu_read8(priv, REG_RF_CTRL); ++ val8 &= ~RF_ENABLE; ++ rtl8xxxu_write8(priv, REG_RF_CTRL, val8); + + /* LDO Sleep mode */ + val8 = rtl8xxxu_read8(priv, REG_LPLDO_CTRL); + val8 |= BIT(4); + rtl8xxxu_write8(priv, REG_LPLDO_CTRL, val8); + +- /* 0x0005[1] = 1 turn off MAC by HW state machine*/ +- val8 = rtl8xxxu_read8(priv, REG_APS_FSMCO + 1); +- val8 |= BIT(1); +- rtl8xxxu_write8(priv, REG_APS_FSMCO + 1, val8); +- +- for (count = RTL8XXXU_MAX_REG_POLL; count; count--) { +- val8 = rtl8xxxu_read8(priv, REG_APS_FSMCO + 1); +- if ((val8 & BIT(1)) == 0) +- break; +- udelay(10); +- } +- +- if (!count) { +- dev_warn(&priv->udev->dev, "%s: Disabling MAC timed out\n", +- __func__); +- ret = -EBUSY; +- goto exit; +- } +- +-exit: +- return ret; ++ return 0; + } + + static int rtl8188eu_emu_to_disabled(struct rtl8xxxu_priv *priv) +@@ -1372,6 +1353,8 @@ void rtl8188eu_power_off(struct rtl8xxxu + + static void rtl8188e_enable_rf(struct rtl8xxxu_priv *priv) + { ++ rtl8xxxu_write8(priv, REG_RF_CTRL, RF_ENABLE | RF_RSTB | RF_SDMRSTB); ++ + rtl8xxxu_write8(priv, REG_TXPAUSE, 0x00); + } + |