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authorRoel Kluin <roel.kluin@gmail.com>2009-03-03 22:55:21 +0100
committerJohn W. Linville <linville@tuxdriver.com>2009-03-06 15:54:32 -0500
commitbd05f28e1a15ae62994fe309a524695fe26dd834 (patch)
treeef5cddeab99411715e1a689d5936dc9eacc74bfb
parent623d563e52d4d4041612e24b33a5610a900dd778 (diff)
cfg80211: test before subtraction on unsigned
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>
-rw-r--r--net/wireless/reg.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 85c9034c59b2..bd0a16c3de5e 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;