From ffb92649f4d93a83de8977f8806cda64204cc465 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 12 Jun 2019 16:26:55 +0200 Subject: [PATCH] iwlegacy: 4965: no need to check return value of debugfs_create functions When calling debugfs functions, there is no need to ever check the return value. This driver was saving the debugfs file away to be removed at a later time. However, the 80211 core would delete the whole directory that the debugfs files are created in, after it asks the driver to do the deletion, so just rely on the 80211 core to do all of the cleanup for us, making us not need to keep a pointer to the dentries around at all. This cleans up the structure of the driver data a bit and makes the code a tiny bit smaller. Cc: Stanislaw Gruszka Cc: Kalle Valo Cc: "David S. Miller" Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Kalle Valo --- drivers/net/wireless/intel/iwlegacy/4965-rs.c | 31 +++++-------------- drivers/net/wireless/intel/iwlegacy/common.h | 4 --- 2 files changed, 8 insertions(+), 27 deletions(-) diff --git a/drivers/net/wireless/intel/iwlegacy/4965-rs.c b/drivers/net/wireless/intel/iwlegacy/4965-rs.c index 54ff83829afb..f640709d9862 100644 --- a/drivers/net/wireless/intel/iwlegacy/4965-rs.c +++ b/drivers/net/wireless/intel/iwlegacy/4965-rs.c @@ -2767,29 +2767,15 @@ static void il4965_rs_add_debugfs(void *il, void *il_sta, struct dentry *dir) { struct il_lq_sta *lq_sta = il_sta; - lq_sta->rs_sta_dbgfs_scale_table_file = - debugfs_create_file("rate_scale_table", 0600, dir, - lq_sta, &rs_sta_dbgfs_scale_table_ops); - lq_sta->rs_sta_dbgfs_stats_table_file = - debugfs_create_file("rate_stats_table", 0400, dir, lq_sta, - &rs_sta_dbgfs_stats_table_ops); - lq_sta->rs_sta_dbgfs_rate_scale_data_file = - debugfs_create_file("rate_scale_data", 0400, dir, lq_sta, - &rs_sta_dbgfs_rate_scale_data_ops); - lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file = - debugfs_create_u8("tx_agg_tid_enable", 0600, dir, - &lq_sta->tx_agg_tid_en); -} - -static void -il4965_rs_remove_debugfs(void *il, void *il_sta) -{ - struct il_lq_sta *lq_sta = il_sta; - debugfs_remove(lq_sta->rs_sta_dbgfs_scale_table_file); - debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file); - debugfs_remove(lq_sta->rs_sta_dbgfs_rate_scale_data_file); - debugfs_remove(lq_sta->rs_sta_dbgfs_tx_agg_tid_en_file); + debugfs_create_file("rate_scale_table", 0600, dir, lq_sta, + &rs_sta_dbgfs_scale_table_ops); + debugfs_create_file("rate_stats_table", 0400, dir, lq_sta, + &rs_sta_dbgfs_stats_table_ops); + debugfs_create_file("rate_scale_data", 0400, dir, lq_sta, + &rs_sta_dbgfs_rate_scale_data_ops); + debugfs_create_u8("tx_agg_tid_enable", 0600, dir, + &lq_sta->tx_agg_tid_en); } #endif @@ -2816,7 +2802,6 @@ static const struct rate_control_ops rs_4965_ops = { .free_sta = il4965_rs_free_sta, #ifdef CONFIG_MAC80211_DEBUGFS .add_sta_debugfs = il4965_rs_add_debugfs, - .remove_sta_debugfs = il4965_rs_remove_debugfs, #endif }; diff --git a/drivers/net/wireless/intel/iwlegacy/common.h b/drivers/net/wireless/intel/iwlegacy/common.h index 986646af8dfd..3c6f41763dde 100644 --- a/drivers/net/wireless/intel/iwlegacy/common.h +++ b/drivers/net/wireless/intel/iwlegacy/common.h @@ -2822,10 +2822,6 @@ struct il_lq_sta { struct il_traffic_load load[TID_MAX_LOAD_COUNT]; u8 tx_agg_tid_en; #ifdef CONFIG_MAC80211_DEBUGFS - struct dentry *rs_sta_dbgfs_scale_table_file; - struct dentry *rs_sta_dbgfs_stats_table_file; - struct dentry *rs_sta_dbgfs_rate_scale_data_file; - struct dentry *rs_sta_dbgfs_tx_agg_tid_en_file; u32 dbg_fixed_rate; #endif struct il_priv *drv; -- 2.30.2