diff options
| author | Jiri Benc <jbenc@suse.cz> | 2005-10-10 13:16:53 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-10-18 17:25:36 -0400 |
| commit | 757d18faee58aa4c43bcaf9a44decf17fa68adeb (patch) | |
| tree | 307ccb9b815b2b53ad79bb0b0bc5d17a6f39aed0 /net | |
| parent | 28af493cd7b89cba7e3ee534079cf4f41bb4b4f9 (diff) | |
[PATCH] ieee80211: division by zero fix
This fixes division by zero bug in ieee80211_wx_get_scan().
Signed-off-by: Jiri Benc <jbenc@suse.cz>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ieee80211/ieee80211_wx.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/net/ieee80211/ieee80211_wx.c b/net/ieee80211/ieee80211_wx.c index ee7a70a13250..1ce7af9bec35 100644 --- a/net/ieee80211/ieee80211_wx.c +++ b/net/ieee80211/ieee80211_wx.c | |||
| @@ -152,15 +152,18 @@ static inline char *ipw2100_translate_scan(struct ieee80211_device *ieee, | |||
| 152 | iwe.u.qual.level = 0; | 152 | iwe.u.qual.level = 0; |
| 153 | } else { | 153 | } else { |
| 154 | iwe.u.qual.level = network->stats.rssi; | 154 | iwe.u.qual.level = network->stats.rssi; |
| 155 | iwe.u.qual.qual = | 155 | if (ieee->perfect_rssi == ieee->worst_rssi) |
| 156 | (100 * | 156 | iwe.u.qual.qual = 100; |
| 157 | (ieee->perfect_rssi - ieee->worst_rssi) * | 157 | else |
| 158 | (ieee->perfect_rssi - ieee->worst_rssi) - | 158 | iwe.u.qual.qual = |
| 159 | (ieee->perfect_rssi - network->stats.rssi) * | 159 | (100 * |
| 160 | (15 * (ieee->perfect_rssi - ieee->worst_rssi) + | 160 | (ieee->perfect_rssi - ieee->worst_rssi) * |
| 161 | 62 * (ieee->perfect_rssi - network->stats.rssi))) / | 161 | (ieee->perfect_rssi - ieee->worst_rssi) - |
| 162 | ((ieee->perfect_rssi - ieee->worst_rssi) * | 162 | (ieee->perfect_rssi - network->stats.rssi) * |
| 163 | (ieee->perfect_rssi - ieee->worst_rssi)); | 163 | (15 * (ieee->perfect_rssi - ieee->worst_rssi) + |
| 164 | 62 * (ieee->perfect_rssi - network->stats.rssi))) / | ||
| 165 | ((ieee->perfect_rssi - ieee->worst_rssi) * | ||
| 166 | (ieee->perfect_rssi - ieee->worst_rssi)); | ||
| 164 | if (iwe.u.qual.qual > 100) | 167 | if (iwe.u.qual.qual > 100) |
| 165 | iwe.u.qual.qual = 100; | 168 | iwe.u.qual.qual = 100; |
| 166 | else if (iwe.u.qual.qual < 1) | 169 | else if (iwe.u.qual.qual < 1) |