linux-kernel - [RFC PATCH 06/18] floppy: use init disk helper

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Date:   Tue, 4 Oct 2022 22:00:15 -0700
From:   Chaitanya Kulkarni <kch@...dia.com>
To:     <ogeert@...ux-m68k.org>, <linux-block@...r.kernel.org>,
        <linux-m68k@...ts.linux-m68k.org>, <linux-kernel@...r.kernel.org>,
        <drbd-dev@...ts.linbit.com>, <nbd@...er.debian.org>,
        <linux-mtd@...ts.infradead.org>
CC:     <axboe@...nel.dk>, <philipp.reisner@...bit.com>,
        <lars.ellenberg@...bit.com>, <christoph.boehmwalder@...bit.com>,
        <efremov@...ux.com>, <josef@...icpanda.com>, <tim@...erelk.net>,
        <haris.iqbal@...os.com>, <jinpu.wang@...os.com>, <richard@....at>,
        <miquel.raynal@...tlin.com>, <vigneshr@...com>, <kch@...dia.com>,
        <mcgrof@...nel.org>, <hare@...e.de>,
        <damien.lemoal@...nsource.wdc.com>, <johannes.thumshirn@....com>,
        <bvanassche@....org>, <ming.lei@...hat.com>,
        <vincent.fu@...sung.com>, <shinichiro.kawasaki@....com>
Subject: [RFC PATCH 06/18] floppy: use init disk helper

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@...dia.com>
---
 drivers/block/floppy.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c
index ccad3d7b3ddd..7304fd87c038 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4516,18 +4516,14 @@ static int floppy_alloc_disk(unsigned int drive, unsigned int type)
 		return PTR_ERR(disk);
 
 	blk_queue_max_hw_sectors(disk->queue, 64);
-	disk->major = FLOPPY_MAJOR;
-	disk->first_minor = TOMINOR(drive) | (type << 2);
-	disk->minors = 1;
-	disk->fops = &floppy_fops;
 	disk->flags |= GENHD_FL_NO_PART;
 	disk->events = DISK_EVENT_MEDIA_CHANGE;
+	init_disk(disk, FLOPPY_MAJOR, TOMINOR(drive) | (type << 2), 1, 0,
+			(void *)(long)drive, &floppy_fops);
 	if (type)
 		sprintf(disk->disk_name, "fd%d_type%d", drive, type);
 	else
 		sprintf(disk->disk_name, "fd%d", drive);
-	/* to be cleaned up... */
-	disk->private_data = (void *)(long)drive;
 	disk->flags |= GENHD_FL_REMOVABLE;
 
 	disks[drive][type] = disk;
-- 
2.29.0