linux-kernel - [PATCH 2/2] nfsd: Adjust four function calls together with a variable assignment

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Date:   Sat, 13 Jan 2018 15:04:51 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-nfs@...r.kernel.org, Jeff Layton <jlayton@...nel.org>,
        "J. Bruce Fields" <bfields@...ldses.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/2] nfsd: Adjust four function calls together with a variable
 assignment

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 13 Jan 2018 14:40:44 +0100

The script "checkpatch.pl" pointed information out like the following.

ERROR: do not use assignment in if condition

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 fs/nfsd/export.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 3b035a87e4c4..8ab1383bf3ea 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -90,7 +90,8 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
 		goto out;
 
 	err = -EINVAL;
-	if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
+	len = qword_get(&mesg, buf, PAGE_SIZE);
+	if (len <= 0)
 		goto out;
 
 	err = -ENOENT;
@@ -100,7 +101,8 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
 	dprintk("found domain %s\n", buf);
 
 	err = -EINVAL;
-	if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
+	len = qword_get(&mesg, buf, PAGE_SIZE);
+	if (len <= 0)
 		goto out;
 	fsidtype = simple_strtoul(buf, &ep, 10);
 	if (*ep)
@@ -108,7 +110,9 @@ static int expkey_parse(struct cache_detail *cd, char *mesg, int mlen)
 	dprintk("found fsidtype %d\n", fsidtype);
 	if (key_len(fsidtype)==0) /* invalid type */
 		goto out;
-	if ((len=qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
+
+	len = qword_get(&mesg, buf, PAGE_SIZE);
+	if (len <= 0)
 		goto out;
 	dprintk("found fsid length %d\n", len);
 	if (len != key_len(fsidtype))
@@ -538,7 +542,8 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
 
 	/* path */
 	err = -EINVAL;
-	if ((len = qword_get(&mesg, buf, PAGE_SIZE)) <= 0)
+	len = qword_get(&mesg, buf, PAGE_SIZE);
+	if (len <= 0)
 		goto out1;
 
 	err = kern_path(buf, 0, &exp.ex_path);
-- 
2.15.1