linux-kernel - [PATCH] Orangefs: fix ifnullfree.cocci warnings

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Message-ID: <20160326185423.GA91872@lkp-hsx03>
Date:	Sun, 27 Mar 2016 02:54:23 +0800
From:	kbuild test robot <fengguang.wu@...el.com>
To:	Mike Marshall <hubcap@...ibond.com>
Cc:	kbuild-all@...org, linux-fsdevel@...r.kernel.org,
	pvfs2-developers@...wulf-underground.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] Orangefs: fix ifnullfree.cocci warnings

fs/orangefs/orangefs-debugfs.c:130:2-26: WARNING: NULL check before freeing functions like kfree, debugfs_remove, debugfs_remove_recursive or usb_free_urb is not needed. Maybe consider reorganizing relevant code to avoid passing NULL values.

 NULL check before some freeing functions is not needed.

 Based on checkpatch warning
 "kfree(NULL) is safe this check is probably not required"
 and kfreeaddr.cocci by Julia Lawall.

Generated by: scripts/coccinelle/free/ifnullfree.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
---

 orangefs-debugfs.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/fs/orangefs/orangefs-debugfs.c
+++ b/fs/orangefs/orangefs-debugfs.c
@@ -126,8 +126,7 @@ out:

 void orangefs_debugfs_cleanup(void)
 {
-	if (debug_dir)
-		debugfs_remove_recursive(debug_dir);
+	debugfs_remove_recursive(debug_dir);
 }

 /* open ORANGEFS_KMOD_DEBUG_HELP_FILE */