openwrt/package/kernel/mac80211/patches/subsys/370-mac80211-minstrel-remove-unnecessary-debugfs-cleanup.patch

From: Felix Fietkau <nbd@nbd.name>
Date: Sat, 10 Feb 2018 12:41:51 +0100
Subject: [PATCH] mac80211: minstrel: remove unnecessary debugfs cleanup
 code

debugfs entries are cleaned up by debugfs_remove_recursive already.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel.c
===================================================================
--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel.c
+++ backports-v4.18-rc7/net/mac80211/rc80211_minstrel.c
@@ -689,8 +689,8 @@ minstrel_alloc(struct ieee80211_hw *hw,
 
 #ifdef CPTCFG_MAC80211_DEBUGFS
 	mp->fixed_rate_idx = (u32) -1;
-	mp->dbg_fixed_rate = debugfs_create_u32("fixed_rate_idx",
-			0666, debugfsdir, &mp->fixed_rate_idx);
+	debugfs_create_u32("fixed_rate_idx", S_IRUGO | S_IWUGO, debugfsdir,
+			   &mp->fixed_rate_idx);
 #endif
 
 	minstrel_init_cck_rates(mp);
@@ -701,9 +701,6 @@ minstrel_alloc(struct ieee80211_hw *hw,
 static void
 minstrel_free(void *priv)
 {
-#ifdef CPTCFG_MAC80211_DEBUGFS
-	debugfs_remove(((struct minstrel_priv *)priv)->dbg_fixed_rate);
-#endif
 	kfree(priv);
 }
 
@@ -735,7 +732,6 @@ const struct rate_control_ops mac80211_m
 	.free_sta = minstrel_free_sta,
 #ifdef CPTCFG_MAC80211_DEBUGFS
 	.add_sta_debugfs = minstrel_add_sta_debugfs,
-	.remove_sta_debugfs = minstrel_remove_sta_debugfs,
 #endif
 	.get_expected_throughput = minstrel_get_expected_throughput,
 };
Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel.h
===================================================================
--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel.h
+++ backports-v4.18-rc7/net/mac80211/rc80211_minstrel.h
@@ -109,11 +109,6 @@ struct minstrel_sta_info {
 
 	/* sampling table */
 	u8 *sample_table;
-
-#ifdef CPTCFG_MAC80211_DEBUGFS
-	struct dentry *dbg_stats;
-	struct dentry *dbg_stats_csv;
-#endif
 };
 
 struct minstrel_priv {
@@ -137,7 +132,6 @@ struct minstrel_priv {
 	 *   - setting will be applied on next update
 	 */
 	u32 fixed_rate_idx;
-	struct dentry *dbg_fixed_rate;
 #endif
 };
 
@@ -156,7 +150,6 @@ minstrel_get_ewmsd10(struct minstrel_rat
 
 extern const struct rate_control_ops mac80211_minstrel;
 void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
-void minstrel_remove_sta_debugfs(void *priv, void *priv_sta);
 
 /* Recalculate success probabilities and counters for a given rate using EWMA */
 void minstrel_calc_rate_stats(struct minstrel_rate_stats *mrs);
Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel_debugfs.c
===================================================================
--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel_debugfs.c
+++ backports-v4.18-rc7/net/mac80211/rc80211_minstrel_debugfs.c
@@ -214,19 +214,7 @@ minstrel_add_sta_debugfs(void *priv, voi
 {
 	struct minstrel_sta_info *mi = priv_sta;
 
-	mi->dbg_stats = debugfs_create_file("rc_stats", 0444, dir, mi,
-					    &minstrel_stat_fops);
-
-	mi->dbg_stats_csv = debugfs_create_file("rc_stats_csv", 0444, dir, mi,
-						&minstrel_stat_csv_fops);
-}
-
-void
-minstrel_remove_sta_debugfs(void *priv, void *priv_sta)
-{
-	struct minstrel_sta_info *mi = priv_sta;
-
-	debugfs_remove(mi->dbg_stats);
-
-	debugfs_remove(mi->dbg_stats_csv);
+	debugfs_create_file("rc_stats", S_IRUGO, dir, mi, &minstrel_stat_fops);
+	debugfs_create_file("rc_stats_csv", S_IRUGO, dir, mi,
+			    &minstrel_stat_csv_fops);
 }
Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht.c
===================================================================
--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel_ht.c
+++ backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht.c
@@ -1393,7 +1393,6 @@ static const struct rate_control_ops mac
 	.free = minstrel_ht_free,
 #ifdef CPTCFG_MAC80211_DEBUGFS
 	.add_sta_debugfs = minstrel_ht_add_sta_debugfs,
-	.remove_sta_debugfs = minstrel_ht_remove_sta_debugfs,
 #endif
 	.get_expected_throughput = minstrel_ht_get_expected_throughput,
 };
Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht.h
===================================================================
--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel_ht.h
+++ backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht.h
@@ -110,17 +110,12 @@ struct minstrel_ht_sta_priv {
 		struct minstrel_ht_sta ht;
 		struct minstrel_sta_info legacy;
 	};
-#ifdef CPTCFG_MAC80211_DEBUGFS
-	struct dentry *dbg_stats;
-	struct dentry *dbg_stats_csv;
-#endif
 	void *ratelist;
 	void *sample_table;
 	bool is_ht;
 };
 
 void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
-void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta);
 int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
 			   int prob_ewma);
 
Index: backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht_debugfs.c
===================================================================
--- backports-v4.18-rc7.orig/net/mac80211/rc80211_minstrel_ht_debugfs.c
+++ backports-v4.18-rc7/net/mac80211/rc80211_minstrel_ht_debugfs.c
@@ -303,17 +303,8 @@ minstrel_ht_add_sta_debugfs(void *priv,
 {
 	struct minstrel_ht_sta_priv *msp = priv_sta;
 
-	msp->dbg_stats = debugfs_create_file("rc_stats", 0444, dir, msp,
-					     &minstrel_ht_stat_fops);
-	msp->dbg_stats_csv = debugfs_create_file("rc_stats_csv", 0444, dir, msp,
-						 &minstrel_ht_stat_csv_fops);
-}
-
-void
-minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta)
-{
-	struct minstrel_ht_sta_priv *msp = priv_sta;
-
-	debugfs_remove(msp->dbg_stats);
-	debugfs_remove(msp->dbg_stats_csv);
+	debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
+			    &minstrel_ht_stat_fops);
+	debugfs_create_file("rc_stats_csv", S_IRUGO, dir, msp,
+			    &minstrel_ht_stat_csv_fops);
 }