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Groups > linux.kernel > #1586867

[PATCH] RDS: IB: fix ifnullfree.cocci warnings

From kbuild test robot <fengguang.wu@intel.com>
Newsgroups linux.kernel
Subject [PATCH] RDS: IB: fix ifnullfree.cocci warnings
Date 2017-02-23 13:50 +0100
Message-ID <te10m-1jJ-27@gated-at.bofh.it> (permalink)
References <te10m-1jJ-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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net/rds/ib.c:115:2-7: 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@intel.com>
---

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

--- a/net/rds/ib.c
+++ b/net/rds/ib.c
@@ -111,8 +111,7 @@ static void rds_ib_dev_free(struct work_
 		kfree(i_ipaddr);
 	}
 
-	if (rds_ibdev->vector_load)
-		kfree(rds_ibdev->vector_load);
+	kfree(rds_ibdev->vector_load);
 
 	kfree(rds_ibdev);
 }

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net/rds/ib.c:115:2-7: 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. kbuild test robot <fengguang.wu@intel.com> - 2017-02-23 13:50 +0100
  [PATCH] RDS: IB: fix ifnullfree.cocci warnings kbuild test robot <fengguang.wu@intel.com> - 2017-02-23 13:50 +0100
    Re: [PATCH] RDS: IB: fix ifnullfree.cocci warnings Santosh Shilimkar <santosh.shilimkar@oracle.com> - 2017-02-23 17:40 +0100
    Re: [PATCH] RDS: IB: fix ifnullfree.cocci warnings David Miller <davem@davemloft.net> - 2017-02-24 17:20 +0100

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