linux-kernel - [PATCH v3 2/2] mtd: nand: Get rid of needless 'goto'

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Message-Id: <1469138361-14173-4-git-send-email-andrew.smirnov@gmail.com>
Date:	Thu, 21 Jul 2016 14:59:21 -0700
From:	Andrey Smirnov <andrew.smirnov@...il.com>
To:	linux-mtd@...ts.infradead.org
Cc:	Andrey Smirnov <andrew.smirnov@...il.com>,
	Boris Brezillon <boris.brezillon@...e-electrons.com>,
	Richard Weinberger <richard@....at>,
	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 2/2] mtd: nand: Get rid of needless 'goto'

Using "goto" and "switch" statement only makes it harder to follow
control flow and doesn't bring any advantages. Rewrite the code to avoid
using "goto".

Signed-off-by: Brian Norris <computersforpeace@...il.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@...il.com>
---

No changes since v2.

 drivers/mtd/nand/nand_base.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 93f5432..777152b 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2122,7 +2122,7 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from,
 static int nand_read_oob(struct mtd_info *mtd, loff_t from,
 			 struct mtd_oob_ops *ops)
 {
-	int ret = -ENOTSUPP;
+	int ret;
 
 	ops->retlen = 0;
 
@@ -2133,24 +2133,18 @@ static int nand_read_oob(struct mtd_info *mtd, loff_t from,
 		return -EINVAL;
 	}
 
-	nand_get_device(mtd, FL_READING);
-
-	switch (ops->mode) {
-	case MTD_OPS_PLACE_OOB:
-	case MTD_OPS_AUTO_OOB:
-	case MTD_OPS_RAW:
-		break;
+	if (ops->mode != MTD_OPS_PLACE_OOB &&
+	    ops->mode != MTD_OPS_AUTO_OOB &&
+	    ops->mode != MTD_OPS_RAW)
+		return -ENOTSUPP;
 
-	default:
-		goto out;
-	}
+	nand_get_device(mtd, FL_READING);
 
 	if (!ops->datbuf)
 		ret = nand_do_read_oob(mtd, from, ops);
 	else
 		ret = nand_do_read_ops(mtd, from, ops);
 
-out:
 	nand_release_device(mtd);
 	return ret;
 }
-- 
2.5.5