From: Ivo van Doorn <ivdoorn@gmail.com>
Date: Tue, 25 Sep 2007 18:57:49 +0000 (+0200)
Subject: [PATCH] rt2x00: Fix panic on rmmod with rfkill enabled
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=fdd0abc8175dc43a14fe414a09fd7e6a162757bd;p=openwrt%2Fstaging%2Fblogic.git

[PATCH] rt2x00: Fix panic on rmmod with rfkill enabled

When ieee80211_hw.config indicates that the radio
is enabled and is configuring options that require
the link tuner to be restarted the link tuner will
cause a kernel panic when rfkill has indicated the
radio was in fact disabled.

Signed-off-by: Modestas Vainius <modestas@vainius.eu>
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---

diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c
index 92b725263578..0216096c88cd 100644
--- a/drivers/net/wireless/rt2x00/rt2x00dev.c
+++ b/drivers/net/wireless/rt2x00/rt2x00dev.c
@@ -85,6 +85,9 @@ static void rt2x00lib_stop_link_tuner(struct rt2x00_dev *rt2x00dev)
 
 void rt2x00lib_reset_link_tuner(struct rt2x00_dev *rt2x00dev)
 {
+	if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
+		return;
+
 	rt2x00lib_stop_link_tuner(rt2x00dev);
 	rt2x00lib_start_link_tuner(rt2x00dev);
 }