cfg80211: Use const more consistently in for_each_element macros

Enforce the first argument to be a correct type of a pointer to struct
element and avoid unnecessary typecasts from const to non-const pointers
(the change in validate_ie_attr() is needed to make this part work). In
addition, avoid signed/unsigned comparison within for_each_element() and
mark struct element packed just in case.

Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 5d85f6032f84..80878b431584 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -205,7 +205,7 @@ static int validate_ie_attr(const struct nlattr *attr,
 {
         const u8 *data = nla_data(attr);
         unsigned int len = nla_len(attr);
-        struct element *elem;
+        const struct element *elem;
 
         for_each_element(elem, data, len) {
                 /* nothing */