[PATCH] bonding: Return correct error code

[PATCH] bonding: Return correct error code

[Amitoj Kaur Chawla]

The return value of kzalloc on failure of allocation of memory should
be -ENOMEM and not -1.

Found using Coccinelle. A simplified version of the semantic patch
used is:

//<smpl>
@@
expression *e;
@@

e = kzalloc(...);
if (e == NULL) {
...
return
- -1
+ -ENOMEM
;
}
//</smpl>

The single call site only checks that the return value is not 0,
hence no change is required at the call site.

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
---
 drivers/net/bonding/bond_alb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index bb9e9fc..c5ac160 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -159,7 +159,7 @@ static int tlb_initialize(struct bonding *bond)
 
 	new_hashtbl = kzalloc(size, GFP_KERNEL);
 	if (!new_hashtbl)
-		return -1;
+		return -ENOMEM;
 
 	spin_lock_bh(&bond->mode_lock);
 
-- 
1.9.1

Re: [PATCH] bonding: Return correct error code

[David Miller]

From: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Date: Sun, 7 Feb 2016 10:56:25 +0530

> The return value of kzalloc on failure of allocation of memory should
> be -ENOMEM and not -1.
> 
> Found using Coccinelle. A simplified version of the semantic patch
> used is:
 ...
> The single call site only checks that the return value is not 0,
> hence no change is required at the call site.
> 
> Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>

Applied, thanks.