From: Roel Kluin <roel.kluin@gmail.com>
To: johannes@sipsolutions.net
Cc: linux-wireless@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH] cfg80211: test before subtraction on unsigned
Date: Tue, 03 Mar 2009 22:55:21 +0100 [thread overview]
Message-ID: <49ADA749.6020901@gmail.com> (raw)
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;
reply other threads:[~2009-03-03 21:55 UTC|newest]
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