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Groups > linux.kernel > #1450802

[PATCH 03/12] staging: lustre: One function call less in class_register_type() after error detection

From SF Markus Elfring <elfring@users.sourceforge.net>
Newsgroups linux.kernel
Subject [PATCH 03/12] staging: lustre: One function call less in class_register_type() after error detection
Date 2016-07-26 21:10 +0200
Message-ID <rZfTQ-5XI-25@gated-at.bofh.it> (permalink)
References (1 earlier) <qFfce-yf-5@gated-at.bofh.it> <qIe0h-220-1@gated-at.bofh.it> <qIe9X-25k-7@gated-at.bofh.it> <qIinh-4Eb-35@gated-at.bofh.it> <rZfK9-5Fs-7@gated-at.bofh.it>
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From: Markus Elfring <elfring@users.sourceforge.net>
Date: Tue, 26 Jul 2016 13:40:47 +0200

The kobject_put() function was called in a few cases by the
class_register_type() function during error handling even if the passed
data structure element did not contain a pointer for a valid data item.

Adjust jump targets according to the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/staging/lustre/lustre/obdclass/genops.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/lustre/lustre/obdclass/genops.c b/drivers/staging/lustre/lustre/obdclass/genops.c
index 1b5aa9b..10dd145 100644
--- a/drivers/staging/lustre/lustre/obdclass/genops.c
+++ b/drivers/staging/lustre/lustre/obdclass/genops.c
@@ -164,7 +164,7 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops,
 	if (!type->typ_dt_ops ||
 	    !type->typ_md_ops ||
 	    !type->typ_name)
-		goto failed;
+		goto free_name;
 
 	*(type->typ_dt_ops) = *dt_ops;
 	/* md_ops is optional */
@@ -180,20 +180,20 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops,
 		rc = type->typ_debugfs_entry ? PTR_ERR(type->typ_debugfs_entry)
 					     : -ENOMEM;
 		type->typ_debugfs_entry = NULL;
-		goto failed;
+		goto free_name;
 	}
 
 	type->typ_kobj = kobject_create_and_add(type->typ_name, lustre_kobj);
 	if (!type->typ_kobj) {
 		rc = -ENOMEM;
-		goto failed;
+		goto free_name;
 	}
 
 	if (ldt) {
 		type->typ_lu = ldt;
 		rc = lu_device_type_init(ldt);
 		if (rc != 0)
-			goto failed;
+			goto put_object;
 	}
 
 	spin_lock(&obd_types_lock);
@@ -201,9 +201,9 @@ int class_register_type(struct obd_ops *dt_ops, struct md_ops *md_ops,
 	spin_unlock(&obd_types_lock);
 
 	return 0;
-
- failed:
+put_object:
 	kobject_put(type->typ_kobj);
+free_name:
 	kfree(type->typ_name);
 	kfree(type->typ_md_ops);
 	kfree(type->typ_dt_ops);
-- 
2.9.2

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Thread

[PATCH 00/12] staging-Lustre: Fine-tuning for seven function  implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:00 +0200
  [PATCH 01/12] staging/lustre/ldlm: Delete unnecessary checks before  the function call "kset_unregister" SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:00 +0200
  [PATCH 04/12] staging: lustre: Split a condition check in  class_register_type() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:10 +0200
  [PATCH 06/12] staging: lustre: Return directly after a failed  kcalloc() in mgc_process_recover_log() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:10 +0200
  [PATCH 02/12] staging: lustre: Delete unnecessary checks before the  function call "kobject_put" SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:10 +0200
  [PATCH 07/12] staging: lustre: Less checks after a failed  alloc_page() in mgc_process_recover_log() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:10 +0200
  [PATCH 08/12] staging: lustre: Less checks after a failed  ptlrpc_request_alloc() in mgc_process_recover_log() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:10 +0200
  [PATCH 05/12] staging: lustre: Optimize error handling in  class_register_type() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:10 +0200
    Re: [PATCH 05/12] staging: lustre: Optimize error handling in class_register_type() Oleg Drokin <oleg.drokin@intel.com> - 2016-07-26 21:20 +0200
      Re: [lustre-devel] [PATCH 05/12] staging: lustre: Optimize error handling in class_register_type() Oleg Drokin <oleg.drokin@intel.com> - 2016-07-26 21:20 +0200
      Re: staging: lustre: Optimize error handling in class_register_type() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 22:20 +0200
  Re: [PATCH 03/12] staging: lustre: One function call less in class_register_type() after error detection Oleg Drokin <oleg.drokin@intel.com> - 2016-07-26 21:10 +0200
    Re: staging: lustre: One function call less in class_register_type()  after error detection SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 22:00 +0200
      Re: staging: lustre: One function call less in class_register_type() after error detection Oleg Drokin <oleg.drokin@intel.com> - 2016-07-27 00:00 +0200
        Re: staging: lustre: One function call less in class_register_type()  after error detection SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-28 08:00 +0200
          Re: [lustre-devel] staging: lustre: One function call less in class_register_type() after error detection Oleg Drokin <oleg.drokin@intel.com> - 2016-07-29 17:30 +0200
            Re: [lustre-devel] staging: lustre: One function call less in  class_register_type() after error detection SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-30 08:30 +0200
  [PATCH 03/12] staging: lustre: One function call less in  class_register_type() after error detection SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:10 +0200
  [PATCH 12/12] staging: lustre: Delete an unnecessary variable  initialisation in mgc_process_recover_log() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:20 +0200
  [PATCH 11/12] staging: lustre: Move an assignment for the variable  "eof" in mgc_process_recover_log() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:20 +0200
  [PATCH 10/12] staging: lustre: Rename jump labels in  mgc_process_recover_log() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:20 +0200
  [PATCH 09/12] staging: lustre: Delete a check for the variable "req"  in mgc_process_recover_log() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-07-26 21:20 +0200

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