Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
 216.228.117.161 as permitted sender) receiver=protection.outlook.com;
 client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C
From:   Chaitanya Kulkarni <kch@nvidia.com>
To:     <ogeert@linux-m68k.org>, <linux-block@vger.kernel.org>,
        <linux-m68k@lists.linux-m68k.org>, <linux-kernel@vger.kernel.org>,
        <drbd-dev@lists.linbit.com>, <nbd@other.debian.org>,
        <linux-mtd@lists.infradead.org>
CC:     <axboe@kernel.dk>, <philipp.reisner@linbit.com>,
        <lars.ellenberg@linbit.com>, <christoph.boehmwalder@linbit.com>,
        <efremov@linux.com>, <josef@toxicpanda.com>, <tim@cyberelk.net>,
        <haris.iqbal@ionos.com>, <jinpu.wang@ionos.com>, <richard@nod.at>,
        <miquel.raynal@bootlin.com>, <vigneshr@ti.com>, <kch@nvidia.com>,
        <mcgrof@kernel.org>, <hare@suse.de>,
        <damien.lemoal@opensource.wdc.com>, <johannes.thumshirn@wdc.com>,
        <bvanassche@acm.org>, <ming.lei@redhat.com>,
        <vincent.fu@samsung.com>, <shinichiro.kawasaki@wdc.com>
Subject: [RFC PATCH 04/18] brd: use init disk helper
Date:   Tue, 4 Oct 2022 22:00:13 -0700
Message-ID: <20221005050027.39591-5-kch@nvidia.com>
In-Reply-To: <20221005050027.39591-1-kch@nvidia.com>
References: <20221005050027.39591-1-kch@nvidia.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Oct 2022 05:01:37.1522
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: 65b42157-e7b5-4bf3-e4fe-08daa68eaeba
X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com]
X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT112.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5711
X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
        DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,
        RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE
        autolearn=no autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Add and use the helper to initialize the common fields of struct gendisk
such as major, first_minor, minors, disk_name, private_data, and ops.
This initialization is spread all over the block drivers. This avoids
code repetation of inialization code of gendisk in current block drivers
and any future ones.

Signed-off-by: Chaitanya Kulkarni <kch@nvidia.com>
---
 drivers/block/ataflop.c | 8 ++------
 drivers/block/brd.c     | 9 ++-------
 2 files changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index 9deb4df6bdb8..cd70f7b329c4 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -1997,15 +1997,11 @@ static int ataflop_alloc_disk(unsigned int drive, unsigned int type)
 	if (IS_ERR(disk))
 		return PTR_ERR(disk);
 
-	disk->major = FLOPPY_MAJOR;
-	disk->first_minor = drive + (type << 2);
-	disk->minors = 1;
 	sprintf(disk->disk_name, "fd%d", drive);
-	disk->fops = &floppy_fops;
 	disk->flags |= GENHD_FL_NO_PART;
 	disk->events = DISK_EVENT_MEDIA_CHANGE;
-	disk->private_data = &unit[drive];
-	set_capacity(disk, MAX_DISK_SIZE * 2);
+	init_disk(disk, FLOPPY_MAJOR, drive + (type << 2), 1,
+			MAX_DISK_SIZE * 2, &unit[drive], &floppy_fops);
 
 	unit[drive].disk[type] = disk;
 	return 0;
diff --git a/drivers/block/brd.c b/drivers/block/brd.c
index 20acc4a1fd6d..f60fda36a813 100644
--- a/drivers/block/brd.c
+++ b/drivers/block/brd.c
@@ -392,14 +392,9 @@ static int brd_alloc(int i)
 	if (!disk)
 		goto out_free_dev;
 
-	disk->major		= RAMDISK_MAJOR;
-	disk->first_minor	= i * max_part;
-	disk->minors		= max_part;
-	disk->fops		= &brd_fops;
-	disk->private_data	= brd;
 	strscpy(disk->disk_name, buf, DISK_NAME_LEN);
-	set_capacity(disk, rd_size * 2);
-	
+	init_disk(disk, RAMDISK_MAJOR, i * max_part, max_part, rd_size * 2,
+			brd, &brd_fops);
 	/*
 	 * This is so fdisk will align partitions on 4k, because of
 	 * direct_access API needing 4k alignment, returning a PFN
-- 
2.29.0