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cfg80211: test before subtraction on unsigned

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freq_diff is unsigned, so test before subtraction

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Roel Kluin 2009-03-03 22:55:21 +01:00 committed by John W. Linville
parent 623d563e52
commit bd05f28e1a
1 changed files with 2 additions and 1 deletions
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3
net/wireless/reg.c
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@ -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;