linux-kernel - [PATCH 2/5] mtd/rfd_ftl: Less function calls in scan

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Date:   Sat, 6 Jan 2018 16:08:51 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-mtd@...ts.infradead.org,
        Boris Brezillon <boris.brezillon@...e-electrons.com>,
        Brian Norris <computersforpeace@...il.com>,
        Cyrille Pitchen <cyrille.pitchen@...ev4u.fr>,
        David Woodhouse <dwmw2@...radead.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/5] mtd/rfd_ftl: Less function calls in scan_header() after
 error detection

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 6 Jan 2018 14:50:58 +0100

The functions "kfree" and "vfree" were called in three cases
by the scan_header() function during error handling even if
the passed data structure member contained a null pointer.

Adjust jump targets according to the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/mtd/rfd_ftl.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/mtd/rfd_ftl.c b/drivers/mtd/rfd_ftl.c
index efff25f15d5b..19e14f909dc6 100644
--- a/drivers/mtd/rfd_ftl.c
+++ b/drivers/mtd/rfd_ftl.c
@@ -182,16 +182,16 @@ static int scan_header(struct partition *part)
 
 	part->header_cache = kmalloc(part->header_size, GFP_KERNEL);
 	if (!part->header_cache)
-		goto err;
+		return -ENOMEM;
 
 	part->blocks = kcalloc(part->total_blocks, sizeof(struct block),
 			GFP_KERNEL);
 	if (!part->blocks)
-		goto err;
+		goto free_cache;
 
 	part->sector_map = vmalloc(part->sector_count * sizeof(u_long));
 	if (!part->sector_map)
-		goto err;
+		goto free_blocks;
 
 	for (i=0; i<part->sector_count; i++)
 		part->sector_map[i] = -1;
@@ -229,9 +229,10 @@ static int scan_header(struct partition *part)
 
 err:
 	vfree(part->sector_map);
-	kfree(part->header_cache);
+free_blocks:
 	kfree(part->blocks);
-
+free_cache:
+	kfree(part->header_cache);
 	return rc;
 }
 
-- 
2.15.1