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Diffstat (limited to 'net/mac80211/rate.c')
-rw-r--r--net/mac80211/rate.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index ccda7454fb1..b9007f80cb9 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -284,9 +284,16 @@ int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
struct rate_control_ref *ref, *old;
ASSERT_RTNL();
+
if (local->open_count)
return -EBUSY;
+ if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
+ if (WARN_ON(!local->ops->set_rts_threshold))
+ return -EINVAL;
+ return 0;
+ }
+
ref = rate_control_alloc(name, local);
if (!ref) {
printk(KERN_WARNING "%s: Failed to select rate control "
@@ -305,7 +312,6 @@ int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
"algorithm '%s'\n", wiphy_name(local->hw.wiphy),
ref->ops->name);
-
return 0;
}
@@ -314,6 +320,10 @@ void rate_control_deinitialize(struct ieee80211_local *local)
struct rate_control_ref *ref;
ref = local->rate_ctrl;
+
+ if (!ref)
+ return;
+
local->rate_ctrl = NULL;
rate_control_put(ref);
}