diff mbox

[6/13,NETFILTER] : arp_tables: make return of 0 explicit

Message ID 1400473875-22228-7-git-send-email-Julia.Lawall@lip6.fr
State Awaiting Upstream, archived
Delegated to: David Miller
Headers show

Commit Message

Julia Lawall May 19, 2014, 4:31 a.m. UTC 
From: Julia Lawall <Julia.Lawall@lip6.fr>

Delete unnecessary local variable whose value is always 0 and that hides
the fact that the result is always 0.

A simplified version of the semantic patch that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
local idexpression ret;
expression e;
position p;
@@

-ret = 0;
... when != ret = e
return 
- ret
+ 0
  ;
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
 net/ipv4/netfilter/arp_tables.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)


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diff mbox

Patch

diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index f95b6f9..89f6737 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -1289,9 +1289,8 @@  compat_copy_entry_from_user(struct compat_arpt_entry *e, void **dstptr,
 	struct xt_target *target;
 	struct arpt_entry *de;
 	unsigned int origsize;
-	int ret, h;
+	int h;
 
-	ret = 0;
 	origsize = *size;
 	de = (struct arpt_entry *)*dstptr;
 	memcpy(de, e, sizeof(struct arpt_entry));
@@ -1312,7 +1311,7 @@  compat_copy_entry_from_user(struct compat_arpt_entry *e, void **dstptr,
 		if ((unsigned char *)de - base < newinfo->underflow[h])
 			newinfo->underflow[h] -= origsize - *size;
 	}
-	return ret;
+	return 0;
 }
 
 static int translate_compat_table(const char *name,