cfg80211: reg: clarify 'treatment' handling in reg_process_hint()

This function can only deal with treatment values OK and ALREADY_SET
so make the callees not return anything else and warn if they do.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 9 insertions, 7 deletions

diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 85cad884a6e5..a95fc3abb8e1 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2026,14 +2026,13 @@ reg_process_hint_driver(struct wiphy *wiphy,
                 break;
         case REG_REQ_IGNORE:
                 reg_free_request(driver_request);
-                return treatment;
+                return REG_REQ_OK;
         case REG_REQ_INTERSECT:
-                /* fall through */
         case REG_REQ_ALREADY_SET:
                 regd = reg_copy_regd(get_cfg80211_regdom());
                 if (IS_ERR(regd)) {
                         reg_free_request(driver_request);
-                        return REG_REQ_IGNORE;
+                        return REG_REQ_OK;
                 }
 
                 tmp = get_wiphy_regdom(wiphy);
@@ -2054,7 +2053,7 @@ reg_process_hint_driver(struct wiphy *wiphy,
                 nl80211_send_reg_change_event(driver_request);
                 reg_update_last_request(driver_request);
                 reg_set_request_processed();
-                return treatment;
+                return REG_REQ_ALREADY_SET;
         }
 
         if (reg_query_database(driver_request))
@@ -2128,10 +2127,10 @@ reg_process_hint_country_ie(struct wiphy *wiphy,
         case REG_REQ_OK:
                 break;
         case REG_REQ_IGNORE:
-                /* fall through */
+                return REG_REQ_OK;
         case REG_REQ_ALREADY_SET:
                 reg_free_request(country_ie_request);
-                return treatment;
+                return REG_REQ_ALREADY_SET;
         case REG_REQ_INTERSECT:
                 reg_free_request(country_ie_request);
                 /*
@@ -2139,7 +2138,7 @@ reg_process_hint_country_ie(struct wiphy *wiphy,
                  * ever want to support it for this case.
                  */
                 WARN_ONCE(1, "Unexpected intersection for country IEs");
-                return REG_REQ_IGNORE;
+                return REG_REQ_OK;
         }
 
         country_ie_request->intersect = false;
@@ -2184,6 +2183,9 @@ static void reg_process_hint(struct regulatory_request *reg_request)
                 goto out_free;
         }
 
+        WARN(treatment != REG_REQ_OK && treatment != REG_REQ_ALREADY_SET,
+             "unexpected treatment value %d\n", treatment);
+
         /* This is required so that the orig_* parameters are saved.
          * NOTE: treatment must be set for any case that reaches here!
          */