cfg80211: move all regulatory hints to workqueue

All regulatory hints (core, driver, userspace and 11d) are now processed in
a workqueue.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 10 insertions, 1 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index bb9129fc61ca..75fa556728ce 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -404,6 +404,7 @@ enum environment_cap {
  *      country IE
  * @country_ie_env: lets us know if the AP is telling us we are outdoor,
  *      indoor, or if it doesn't matter
+ * @list: used to insert into the reg_requests_list linked list
  */
 struct regulatory_request {
         int wiphy_idx;
@@ -412,6 +413,7 @@ struct regulatory_request {
         bool intersect;
         u32 country_ie_checksum;
         enum environment_cap country_ie_env;
+        struct list_head list;
 };
 
 struct ieee80211_freq_range {
diff --git a/include/net/wireless.h b/include/net/wireless.h
index d815aa8b4534..1f4707d18adb 100644
--- a/include/net/wireless.h
+++ b/include/net/wireless.h
@@ -401,8 +401,15 @@ ieee80211_get_response_rate(struct ieee80211_supported_band *sband,
  * domain should be in or by providing a completely build regulatory domain.
  * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried
  * for a regulatory domain structure for the respective country.
+ *
+ * The wiphy must have been registered to cfg80211 prior to this call.
+ * For cfg80211 drivers this means you must first use wiphy_register(),
+ * for mac80211 drivers you must first use ieee80211_register_hw().
+ *
+ * Drivers should check the return value, its possible you can get
+ * an -ENOMEM.
  */
-extern void regulatory_hint(struct wiphy *wiphy, const char *alpha2);
+extern int regulatory_hint(struct wiphy *wiphy, const char *alpha2);
 
 /**
  * regulatory_hint_11d - hints a country IE as a regulatory domain