linux-kernel - [PATCH 047/133] ath9k_htc: do some initial hardware configuration

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Message-Id: <1376692475-28413-48-git-send-email-kamal@canonical.com>
Date:	Fri, 16 Aug 2013 15:33:09 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Oleksij Rempel <linux@...pel-privat.de>,
	"John W. Linville" <linville@...driver.com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 047/133] ath9k_htc: do some initial hardware configuration

3.8.13.7 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Oleksij Rempel <linux@...pel-privat.de>

commit dc2a87f519a4d8cb376ab54f22b6b98a943b51ce upstream.

Currently we configure harwdare and clock, only after
interface start. In this case, if we reload module or
reboot PC without configuring adapter, firmware will freeze.
There is no software way to reset adpter.

This patch add initial configuration and set it in
disabled state, to avoid this freeze. Behaviour of this patch
should be similar to: ifconfig wlan0 up; ifconfig wlan0 down.

Bug: https://github.com/qca/open-ath9k-htc-firmware/issues/1
Tested-by: Bo Shi <cnshibo@...il.com>
Signed-off-by: Oleksij Rempel <linux@...pel-privat.de>
Signed-off-by: John W. Linville <linville@...driver.com>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/net/wireless/ath/ath9k/htc_drv_init.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 0663653..351123a 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -846,6 +846,7 @@ static int ath9k_init_device(struct ath9k_htc_priv *priv,
 	if (error != 0)
 		goto err_rx;
 
+	ath9k_hw_disable(priv->ah);
 #ifdef CONFIG_MAC80211_LEDS
 	/* must be initialized before ieee80211_register_hw */
 	priv->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(priv->hw,
-- 
1.8.1.2

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