regulatory: don't allocate too much memory

There's no need to allocate one reg rule more
than will be used, reduce the allocations. The
allocation in nl80211 already doesn't allocate
too much space.

Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 40646e823d5d743005d2ce2f763239512cd322de..62bf212e5648d76d88969a39b6dfda9edf8c175a 100644 (file)
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -318,8 +318,9 @@ static int reg_copy_regd(const struct ieee80211_regdomain **dst_regd,
        int size_of_regd = 0;
        unsigned int i;
 
-       size_of_regd = sizeof(struct ieee80211_regdomain) +
-         ((src_regd->n_reg_rules + 1) * sizeof(struct ieee80211_reg_rule));
+       size_of_regd =
+               sizeof(struct ieee80211_regdomain) +
+               src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule);
 
        regd = kzalloc(size_of_regd, GFP_KERNEL);
        if (!regd)
@@ -641,7 +642,7 @@ static struct ieee80211_regdomain *regdom_intersect(
                return NULL;
 
        size_of_regd = sizeof(struct ieee80211_regdomain) +
-               ((num_rules + 1) * sizeof(struct ieee80211_reg_rule));
+                      num_rules * sizeof(struct ieee80211_reg_rule);
 
        rd = kzalloc(size_of_regd, GFP_KERNEL);
        if (!rd)