From c8abbe79cce67f201bbbe8ce797476fdc96a80f4 Mon Sep 17 00:00:00 2001
From: Ping-Ke Shih <pkshih@realtek.com>
Date: Wed, 17 Jan 2018 14:15:22 +0800
Subject: [PATCH] rtlwifi: fix scan channel 1 fail after IPS
Git-commit: c8abbe79cce67f201bbbe8ce797476fdc96a80f4
Patch-mainline: v4.16-rc1
References: FATE#326906
If there is no connection, driver will enter IPS state. Meanwhile, it
fails to scan channel 1 by the command 'iw dev wlan0 scan freq 2412',
because hardware channel setting lose after IPS. Thus, restore channel
setting from hw->conf.channel set by last rtl_op_config().
Signed-off-by: Tim Lee <timlee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/net/wireless/realtek/rtlwifi/ps.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtlwifi/ps.c b/drivers/net/wireless/realtek/rtlwifi/ps.c
index 6a4008845f49..71af24e2e051 100644
--- a/drivers/net/wireless/realtek/rtlwifi/ps.c
+++ b/drivers/net/wireless/realtek/rtlwifi/ps.c
@@ -51,6 +51,11 @@ bool rtl_ps_enable_nic(struct ieee80211_hw *hw)
&rtlmac->retry_long);
RT_CLEAR_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_HALT_NIC);
+ rtlpriv->cfg->ops->switch_channel(hw);
+ rtlpriv->cfg->ops->set_channel_access(hw);
+ rtlpriv->cfg->ops->set_bw_mode(hw,
+ cfg80211_get_chandef_type(&hw->conf.chandef));
+
/*<3> Enable Interrupt */
rtlpriv->cfg->ops->enable_interrupt(hw);
--
2.19.2