linux-kernel - [PATCH 18/25] staging: lustre: libcfs: clear up failure patch in cfs_cpt_*

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Message-Id: <1523851807-16573-19-git-send-email-jsimmons@infradead.org>
Date:   Mon, 16 Apr 2018 00:10:00 -0400
From:   James Simmons <jsimmons@...radead.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org,
        Andreas Dilger <andreas.dilger@...el.com>,
        Oleg Drokin <oleg.drokin@...el.com>, NeilBrown <neilb@...e.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>,
        Dmitry Eremin <dmitry.eremin@...el.com>,
        James Simmons <jsimmons@...radead.org>
Subject: [PATCH 18/25] staging: lustre: libcfs: clear up failure patch in cfs_cpt_*_print

From: Dmitry Eremin <dmitry.eremin@...el.com>

Currently both cfs_cpt_table_print() and cfs_cpt_distance_print()
handle the error path in a confusing way. Simplify it so it just
returns E2BIG on failure instead of testing rc value before
exiting.

Signed-off-by: Dmitry Eremin <dmitry.eremin@...el.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8703
Reviewed-on: https://review.whamcloud.com/23222
Reviewed-by: Amir Shehata <amir.shehata@...el.com>
Reviewed-by: James Simmons <uja.ornl@...oo.com>
Reviewed-by: Oleg Drokin <oleg.drokin@...el.com>
Signed-off-by: James Simmons <jsimmons@...radead.org>
---
 drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c
index 435ee8e..c4f53ab 100644
--- a/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c
+++ b/drivers/staging/lustre/lnet/libcfs/linux/linux-cpu.c
@@ -155,7 +155,7 @@ struct cfs_cpt_table *cfs_cpt_table_alloc(int ncpt)
 int cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf, int len)
 {
 	char *tmp = buf;
-	int rc = -EFBIG;
+	int rc;
 	int i;
 	int j;
 
@@ -183,19 +183,17 @@ int cfs_cpt_table_print(struct cfs_cpt_table *cptab, char *buf, int len)
 		len--;
 	}
 
-	rc = 0;
-err:
-	if (rc < 0)
-		return rc;
-
 	return tmp - buf;
+
+err:
+	return -E2BIG;
 }
 EXPORT_SYMBOL(cfs_cpt_table_print);
 
 int cfs_cpt_distance_print(struct cfs_cpt_table *cptab, char *buf, int len)
 {
 	char *tmp = buf;
-	int rc = -EFBIG;
+	int rc;
 	int i;
 	int j;
 
@@ -223,12 +221,11 @@ int cfs_cpt_distance_print(struct cfs_cpt_table *cptab, char *buf, int len)
 		tmp++;
 		len--;
 	}
-	rc = 0;
-err:
-	if (rc < 0)
-		return rc;
 
 	return tmp - buf;
+
+err:
+	return -E2BIG;
 }
 EXPORT_SYMBOL(cfs_cpt_distance_print);
 
-- 
1.8.3.1