From 6bbdce5ac755e3b3cdcf9bb9fdbcc2af78ad34d0 Mon Sep 17 00:00:00 2001
From: "John W. Linville" <linville@tuxdriver.com>
Date: Tue, 2 Jan 2007 21:22:05 -0500
Subject: [PATCH] [PATCH] softmac: avoid assert in ieee80211softmac_wx_get_rate
Unconfigured bcm43xx device can hit an assert() during wx_get_rate
queries. This is because bcm43xx calls ieee80211softmac_start late
(i.e. during open instead of probe).
bcm43xx_net_open ->
bcm43xx_init_board ->
bcm43xx_select_wireless_core ->
ieee80211softmac_start
Fix is to check that device is running before completing
ieee80211softmac_wx_get_rate.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
---
net/ieee80211/softmac/ieee80211softmac_wx.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/net/ieee80211/softmac/ieee80211softmac_wx.c b/net/ieee80211/softmac/ieee80211softmac_wx.c
index fa2f7da606a9..fb58e03b3fbd 100644
--- a/net/ieee80211/softmac/ieee80211softmac_wx.c
+++ b/net/ieee80211/softmac/ieee80211softmac_wx.c
@@ -265,6 +265,12 @@ ieee80211softmac_wx_get_rate(struct net_device *net_dev,
int err = -EINVAL;
spin_lock_irqsave(&mac->lock, flags);
+
+ if (unlikely(!mac->running)) {
+ err = -ENODEV;
+ goto out_unlock;
+ }
+
switch (mac->txrates.default_rate) {
case IEEE80211_CCK_RATE_1MB:
data->bitrate.value = 1000000;
--
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