Linux-libre 4.3.2-gnu

1 files changed, 17 insertions, 0 deletions

diff --git a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
index b7f18e215..6e9418ed9 100644
--- a/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
+++ b/drivers/net/wireless/rtlwifi/rtl8821ae/hw.c
@@ -2253,11 +2253,28 @@ void rtl8821ae_set_qos(struct ieee80211_hw *hw, int aci)
 	}
 }
 
+static void rtl8821ae_clear_interrupt(struct ieee80211_hw *hw)
+{
+	struct rtl_priv *rtlpriv = rtl_priv(hw);
+	u32 tmp = rtl_read_dword(rtlpriv, REG_HISR);
+
+	rtl_write_dword(rtlpriv, REG_HISR, tmp);
+
+	tmp = rtl_read_dword(rtlpriv, REG_HISRE);
+	rtl_write_dword(rtlpriv, REG_HISRE, tmp);
+
+	tmp = rtl_read_dword(rtlpriv, REG_HSISR);
+	rtl_write_dword(rtlpriv, REG_HSISR, tmp);
+}
+
 void rtl8821ae_enable_interrupt(struct ieee80211_hw *hw)
 {
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 
+	if (!rtlpci->int_clear)
+		rtl8821ae_clear_interrupt(hw);/*clear it here first*/
+
 	rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] & 0xFFFFFFFF);
 	rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] & 0xFFFFFFFF);
 	rtlpci->irq_enabled = true;