linux-kernel - Re: [PATCH] afs: remove redundant assignment to variable ret

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Date:   Sat, 11 May 2019 08:35:52 -0700
From:   Joe Perches <joe@...ches.com>
To:     Colin King <colin.king@...onical.com>,
        David Howells <dhowells@...hat.com>,
        linux-afs@...ts.infradead.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] afs: remove redundant assignment to variable ret

On Sat, 2019-05-11 at 13:36 +0100, Colin King wrote:
> The variable ret is being assigned a value however this is never
> read and later it is being reassigned to a new value. The assignment
> is redundant and hence can be removed.
[]
> diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c
[]
> @@ -71,7 +71,6 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
>  	if (ret == 0) {
>  		ret = acl->size;
>  		if (size > 0) {
> -			ret = -ERANGE;
>  			if (acl->size > size)
>  				return -ERANGE;
>  			memcpy(buffer, acl->data, acl->size);

It looks like the ret = acl->size immediately
after the memcpy should be removed as well.
---
 fs/afs/xattr.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c
index c81f85003fc7..e21de2f166a4 100644
--- a/fs/afs/xattr.c
+++ b/fs/afs/xattr.c
@@ -71,11 +71,9 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
 	if (ret == 0) {
 		ret = acl->size;
 		if (size > 0) {
-			ret = -ERANGE;
 			if (acl->size > size)
 				return -ERANGE;
 			memcpy(buffer, acl->data, acl->size);
-			ret = acl->size;
 		}
 		kfree(acl);
 	}