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floppy: use blk_mq_alloc_disk and blk_cleanup_disk

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Use blk_mq_alloc_disk and blk_cleanup_disk to simplify the gendisk and
request_queue allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Link: https://lore.kernel.org/r/20210602065345.355274-18-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2021-06-02 09:53:32 +03:00
committed by Jens Axboe
parent 6560ec961a
commit 34f84aefe2
1 changed files with 5 additions and 15 deletions
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drivers/block/floppy.c
+5 -15
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@@ -4491,23 +4491,15 @@ static bool floppy_available(int drive)
static int floppy_alloc_disk(unsigned int drive, unsigned int type)
{
struct gendisk *disk;
int err;
disk = alloc_disk(1);
if (!disk)
return -ENOMEM;
disk->queue = blk_mq_init_queue(&tag_sets[drive]);
if (IS_ERR(disk->queue)) {
err = PTR_ERR(disk->queue);
disk->queue = NULL;
put_disk(disk);
return err;
}
disk = blk_mq_alloc_disk(&tag_sets[drive], NULL);
if (IS_ERR(disk))
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->events = DISK_EVENT_MEDIA_CHANGE;
if (type)
@@ -4727,10 +4719,8 @@ out_put_disk:
if (!disks[drive][0])
break;
del_timer_sync(&motor_off_timer[drive]);
blk_cleanup_queue(disks[drive][0]->queue);
disks[drive][0]->queue = NULL;
blk_cleanup_disk(disks[drive][0]);
blk_mq_free_tag_set(&tag_sets[drive]);
put_disk(disks[drive][0]);
}
return err;
}