linux-kernel - [PATCH 05/18] mtd-cfi_cmdset_0001: Use common error handling code in do_write

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Date:   Wed, 11 Jan 2017 21:40:26 +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@...el.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Denys Vlasenko <dvlasenk@...hat.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Richard Weinberger <richard@....at>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 05/18] mtd-cfi_cmdset_0001: Use common error handling code in
 do_write_oneword()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 11 Jan 2017 16:40:47 +0100

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/mtd/chips/cfi_cmdset_0001.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 0c0fa918c9ff..4b134e8beb93 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -1552,10 +1552,8 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
 
 	mutex_lock(&chip->mutex);
 	ret = get_chip(map, chip, adr, mode);
-	if (ret) {
-		mutex_unlock(&chip->mutex);
-		return ret;
-	}
+	if (ret)
+		goto unlock;
 
 	XIP_INVAL_CACHED_RANGE(map, adr, map_bankwidth(map));
 	ENABLE_VPP(map);
@@ -1600,6 +1598,7 @@ static int __xipram do_write_oneword(struct map_info *map, struct flchip *chip,
 	xip_enable(map, chip, adr);
  out:	DISABLE_VPP(map);
 	put_chip(map, chip, adr);
+unlock:
 	mutex_unlock(&chip->mutex);
 	return ret;
 }
-- 
2.11.0