* [PATCH] cfg80211: test before subtraction on unsigned
@ 2009-03-03 21:55 Roel Kluin
0 siblings, 0 replies; only message in thread
From: Roel Kluin @ 2009-03-03 21:55 UTC (permalink / raw)
To: johannes; +Cc: linux-wireless, Andrew Morton
freq_diff is unsigned, so test before subtraction
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 85c9034..bd0a16c 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -380,7 +380,8 @@ static bool is_valid_reg_rule(const struct ieee80211_reg_rule *rule)
freq_diff = freq_range->end_freq_khz - freq_range->start_freq_khz;
- if (freq_diff <= 0 || freq_range->max_bandwidth_khz > freq_diff)
+ if (freq_range->end_freq_khz <= freq_range->start_freq_khz ||
+ freq_range->max_bandwidth_khz > freq_diff)
return false;
return true;
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2009-03-03 21:55 [PATCH] cfg80211: test before subtraction on unsigned Roel Kluin
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