linux-kernel - [PATCH -next v2] mtd: spinand: fix missing unlock on error

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Message-ID: <1530696061-76467-1-git-send-email-weiyongjun1@huawei.com>
Date:   Wed, 4 Jul 2018 09:21:01 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     Boris Brezillon <boris.brezillon@...tlin.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        "David Woodhouse" <dwmw2@...radead.org>,
        Brian Norris <computersforpeace@...il.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Peter Pan <peterpandong@...ron.com>,
        Frieder Schrempf <frieder.schrempf@...eet.de>
CC:     Wei Yongjun <weiyongjun1@...wei.com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <kernel-janitors@...r.kernel.org>
Subject: [PATCH -next v2] mtd: spinand: fix missing unlock on error

Add the missing unlock before return from function
spinand_mtd_(read|write) in the error handling case.

Fixes: c898e0526fb6 ("mtd: nand: Add core infrastructure to support SPI NANDs")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
v1 -> v2: using break instead of return
---
 drivers/mtd/nand/spi/core.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index 17d207a..e072464 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -561,11 +561,12 @@ static int spinand_mtd_read(struct mtd_info *mtd, loff_t from,
 	nanddev_io_for_each_page(nand, from, ops, &iter) {
 		ret = spinand_select_target(spinand, iter.req.pos.target);
 		if (ret)
-			return ret;
+			break;
 
 		ret = spinand_ecc_enable(spinand, enable_ecc);
 		if (ret)
-			return ret;
+			break;
+
 
 		ret = spinand_read_page(spinand, &iter.req, enable_ecc);
 		if (ret < 0 && ret != -EBADMSG)
@@ -609,11 +610,11 @@ static int spinand_mtd_write(struct mtd_info *mtd, loff_t to,
 	nanddev_io_for_each_page(nand, to, ops, &iter) {
 		ret = spinand_select_target(spinand, iter.req.pos.target);
 		if (ret)
-			return ret;
+			break;
 
 		ret = spinand_ecc_enable(spinand, enable_ecc);
 		if (ret)
-			return ret;
+			break;
 
 		ret = spinand_write_page(spinand, &iter.req);
 		if (ret)