[PATCH] bcm43xx: Fix array overrun in bcm43xx_geo_init

The problem here is that the bcm34xx driver and the ieee80211
stack do not agree on what channels are possible for 802.11a.
The ieee80211 stack only wants channels between 34 and 165, while
the bcm43xx driver accepts anything from 0 to 200. I made the
bcm43xx driver comply with the ieee80211 stack expectations, by
using the proper constants.

Signed-off-by: Jean Delvare <jdelvare@suse.de>

[mb]: Reduce stack usage by kzalloc-ing ieee80211_geo

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.h b/drivers/net/wireless/bcm43xx/bcm43xx_main.h
index eca79a38594a..30a202b258b5 100644
--- a/drivers/net/wireless/bcm43xx/bcm43xx_main.h
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.h
@@ -118,12 +118,14 @@ int bcm43xx_channel_to_freq(struct bcm43xx_private *bcm,
 static inline
 int bcm43xx_is_valid_channel_a(u8 channel)
 {
-        return (channel <= 200);
+        return (channel >= IEEE80211_52GHZ_MIN_CHANNEL
+               && channel <= IEEE80211_52GHZ_MAX_CHANNEL);
 }
 static inline
 int bcm43xx_is_valid_channel_bg(u8 channel)
 {
-        return (channel >= 1 && channel <= 14);
+        return (channel >= IEEE80211_24GHZ_MIN_CHANNEL
+               && channel <= IEEE80211_24GHZ_MAX_CHANNEL);
 }
 static inline
 int bcm43xx_is_valid_channel(struct bcm43xx_private *bcm,