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cfg80211: test before subtraction on unsigned
author
Roel Kluin
<roel.kluin@gmail.com>
Tue, 3 Mar 2009 21:55:21 +0000
(22:55 +0100)
committer
John W. Linville
<linville@tuxdriver.com>
Fri, 6 Mar 2009 20:54:32 +0000
(15:54 -0500)
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>
net/wireless/reg.c
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diff --git
a/net/wireless/reg.c
b/net/wireless/reg.c
index
85c9034
..
bd0a16c
100644
(file)
--- 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;