iwlegacy: 3945: 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 <sgruszka@redhat.com>
Cc: Kalle Valo <kvalo@codeaurora.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/intel/iwlegacy/3945-rs.c b/drivers/net/wireless/intel/iwlegacy/3945-rs.c
index a697edd..1d810ca 100644 (file)
--- a/drivers/net/wireless/intel/iwlegacy/3945-rs.c
+++ b/drivers/net/wireless/intel/iwlegacy/3945-rs.c
@@ -861,17 +861,8 @@ il3945_add_debugfs(void *il, void *il_sta, struct dentry *dir)
 {
        struct il3945_rs_sta *lq_sta = il_sta;
 
-       lq_sta->rs_sta_dbgfs_stats_table_file =
-           debugfs_create_file("rate_stats_table", 0600, dir, lq_sta,
-                               &rs_sta_dbgfs_stats_table_ops);
-
-}
-
-static void
-il3945_remove_debugfs(void *il, void *il_sta)
-{
-       struct il3945_rs_sta *lq_sta = il_sta;
-       debugfs_remove(lq_sta->rs_sta_dbgfs_stats_table_file);
+       debugfs_create_file("rate_stats_table", 0600, dir, lq_sta,
+                           &rs_sta_dbgfs_stats_table_ops);
 }
 #endif
 
@@ -898,7 +889,6 @@ static const struct rate_control_ops rs_ops = {
        .free_sta = il3945_rs_free_sta,
 #ifdef CONFIG_MAC80211_DEBUGFS
        .add_sta_debugfs = il3945_add_debugfs,
-       .remove_sta_debugfs = il3945_remove_debugfs,
 #endif
 
 };

diff --git a/drivers/net/wireless/intel/iwlegacy/3945.h b/drivers/net/wireless/intel/iwlegacy/3945.h
index 00030d4..1aeb4b2 100644 (file)
--- a/drivers/net/wireless/intel/iwlegacy/3945.h
+++ b/drivers/net/wireless/intel/iwlegacy/3945.h
@@ -87,9 +87,6 @@ struct il3945_rs_sta {
        u8 start_rate;
        struct timer_list rate_scale_flush;
        struct il3945_rate_scale_data win[RATE_COUNT_3945];
-#ifdef CONFIG_MAC80211_DEBUGFS
-       struct dentry *rs_sta_dbgfs_stats_table_file;
-#endif
 
        /* used to be in sta_info */
        int last_txrate_idx;