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From: Luis Chamberlain <mcgrof@kernel.org>
To: axboe@kernel.dk, gregkh@linuxfoundation.org,
	chaitanya.kulkarni@wdc.com, atulgopinathan@gmail.com,
	hare@suse.de, maximlevitsky@gmail.com, oakad@yahoo.com,
	ulf.hansson@linaro.org, colin.king@canonical.com,
	shubhankarvk@gmail.com, baijiaju1990@gmail.com, trix@redhat.com,
	dongsheng.yang@easystack.cn, ceph-devel@vger.kernel.org,
	miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com,
	sth@linux.ibm.com, hoeppner@linux.ibm.com, hca@linux.ibm.com,
	gor@linux.ibm.com, borntraeger@de.ibm.com, oberpar@linux.ibm.com,
	tj@kernel.org
Cc: linux-s390@vger.kernel.org, linux-mtd@lists.infradead.org,
	linux-mmc@vger.kernel.org, linux-block@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Luis Chamberlain <mcgrof@kernel.org>
Subject: [PATCH v2 4/6] s390/block/dasd_genhd: add error handling support for add_disk()
Date: Mon, 27 Sep 2021 15:02:30 -0700	[thread overview]
Message-ID: <20210927220232.1071926-5-mcgrof@kernel.org> (raw)
In-Reply-To: <20210927220232.1071926-1-mcgrof@kernel.org>

We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Be sure to call dasd_gendisk_free() on error.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 drivers/s390/block/dasd_genhd.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index fa966e0db6ca..80673dbfb1f9 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -33,7 +33,7 @@ int dasd_gendisk_alloc(struct dasd_block *block)
 {
 	struct gendisk *gdp;
 	struct dasd_device *base;
-	int len;
+	int len, rc;
 
 	/* Make sure the minor for this device exists. */
 	base = block->base;
@@ -79,7 +79,13 @@ int dasd_gendisk_alloc(struct dasd_block *block)
 	dasd_add_link_to_gendisk(gdp, base);
 	block->gdp = gdp;
 	set_capacity(block->gdp, 0);
-	device_add_disk(&base->cdev->dev, block->gdp, NULL);
+
+	rc = device_add_disk(&base->cdev->dev, block->gdp, NULL);
+	if (rc) {
+		dasd_gendisk_free(block);
+		return rc;
+	}
+
 	return 0;
 }
 
-- 
2.30.2


WARNING: multiple messages have this Message-ID (diff)
From: Luis Chamberlain <mcgrof@kernel.org>
To: axboe@kernel.dk, gregkh@linuxfoundation.org,
	chaitanya.kulkarni@wdc.com, atulgopinathan@gmail.com,
	hare@suse.de, maximlevitsky@gmail.com, oakad@yahoo.com,
	ulf.hansson@linaro.org, colin.king@canonical.com,
	shubhankarvk@gmail.com, baijiaju1990@gmail.com, trix@redhat.com,
	dongsheng.yang@easystack.cn, ceph-devel@vger.kernel.org,
	miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com,
	sth@linux.ibm.com, hoeppner@linux.ibm.com, hca@linux.ibm.com,
	gor@linux.ibm.com, borntraeger@de.ibm.com, oberpar@linux.ibm.com,
	tj@kernel.org
Cc: linux-s390@vger.kernel.org, linux-mtd@lists.infradead.org,
	linux-mmc@vger.kernel.org, linux-block@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Luis Chamberlain <mcgrof@kernel.org>
Subject: [PATCH v2 4/6] s390/block/dasd_genhd: add error handling support for add_disk()
Date: Mon, 27 Sep 2021 15:02:30 -0700	[thread overview]
Message-ID: <20210927220232.1071926-5-mcgrof@kernel.org> (raw)
In-Reply-To: <20210927220232.1071926-1-mcgrof@kernel.org>

We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Be sure to call dasd_gendisk_free() on error.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 drivers/s390/block/dasd_genhd.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index fa966e0db6ca..80673dbfb1f9 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -33,7 +33,7 @@ int dasd_gendisk_alloc(struct dasd_block *block)
 {
 	struct gendisk *gdp;
 	struct dasd_device *base;
-	int len;
+	int len, rc;
 
 	/* Make sure the minor for this device exists. */
 	base = block->base;
@@ -79,7 +79,13 @@ int dasd_gendisk_alloc(struct dasd_block *block)
 	dasd_add_link_to_gendisk(gdp, base);
 	block->gdp = gdp;
 	set_capacity(block->gdp, 0);
-	device_add_disk(&base->cdev->dev, block->gdp, NULL);
+
+	rc = device_add_disk(&base->cdev->dev, block->gdp, NULL);
+	if (rc) {
+		dasd_gendisk_free(block);
+		return rc;
+	}
+
 	return 0;
 }
 
-- 
2.30.2


______________________________________________________
Linux MTD discussion mailing list
http://lists.infradead.org/mailman/listinfo/linux-mtd/

  parent reply	other threads:[~2021-09-27 22:04 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-27 22:02 [PATCH v2 0/6] block: 5th batch of add_disk() error handling conversions Luis Chamberlain
2021-09-27 22:02 ` Luis Chamberlain
2021-09-27 22:02 ` [PATCH v2 1/6] cdrom/gdrom: add error handling support for add_disk() Luis Chamberlain
2021-09-27 22:02   ` Luis Chamberlain
2021-09-27 22:02 ` [PATCH v2 2/6] rbd: add add_disk() error handling Luis Chamberlain
2021-09-27 22:02   ` Luis Chamberlain
2021-09-27 22:02 ` [PATCH v2 3/6] mtd: " Luis Chamberlain
2021-09-27 22:02   ` Luis Chamberlain
2021-09-27 22:02 ` Luis Chamberlain [this message]
2021-09-27 22:02   ` [PATCH v2 4/6] s390/block/dasd_genhd: add error handling support for add_disk() Luis Chamberlain
2021-09-27 22:02 ` [PATCH v2 5/6] s390/block/dcssblk: " Luis Chamberlain
2021-09-27 22:02   ` Luis Chamberlain
2021-09-27 22:02 ` [PATCH v2 6/6] s390/block/scm_blk: " Luis Chamberlain
2021-09-27 22:02   ` Luis Chamberlain
2021-09-27 22:32 ` [PATCH v2 0/6] block: 5th batch of add_disk() error handling conversions Jens Axboe
2021-09-27 22:32   ` Jens Axboe
2021-09-28  8:44   ` Heiko Carstens
2021-09-28  8:44     ` Heiko Carstens
2021-09-28 12:28     ` Jens Axboe
2021-09-28 12:28       ` Jens Axboe

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