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platform_kernel-5.15
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swim: use blk_mq_alloc_disk 

Use the blk_mq_alloc_disk API 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/20210602065345.355274-13-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-02 09:53:27 +03:00 committed by Jens Axboe
parent 9c8463e8e1
commit 51fbfedfcc
1 changed files with 15 additions and 21 deletions
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36
drivers/block/swim.c
View File

@ -800,23 +800,20 @@ static int swim_floppy_init(struct swim_priv *swd)
spin_lock_init(&swd->lock);
for (drive = 0; drive < swd->floppy_count; drive++) {
struct request_queue *q;
err = blk_mq_alloc_sq_tag_set(&swd->unit[drive].tag_set,
&swim_mq_ops, 2, BLK_MQ_F_SHOULD_MERGE);
if (err)
goto exit_put_disks;
swd->unit[drive].disk = alloc_disk(1);
if (swd->unit[drive].disk == NULL) {
err = -ENOMEM;
swd->unit[drive].disk =
blk_mq_alloc_disk(&swd->unit[drive].tag_set,
&swd->unit[drive]);
if (IS_ERR(swd->unit[drive].disk)) {
blk_mq_free_tag_set(&swd->unit[drive].tag_set);
err = PTR_ERR(swd->unit[drive].disk);
goto exit_put_disks;
}
q = blk_mq_init_sq_queue(&swd->unit[drive].tag_set, &swim_mq_ops,
2, BLK_MQ_F_SHOULD_MERGE);
if (IS_ERR(q)) {
err = PTR_ERR(q);
goto exit_put_disks;
}
swd->unit[drive].disk->queue = q;
swd->unit[drive].disk->queue->queuedata = &swd->unit[drive];
swd->unit[drive].swd = swd;
}
@ -824,6 +821,7 @@ static int swim_floppy_init(struct swim_priv *swd)
swd->unit[drive].disk->flags = GENHD_FL_REMOVABLE;
swd->unit[drive].disk->major = FLOPPY_MAJOR;
swd->unit[drive].disk->first_minor = drive;
swd->unit[drive].disk->minors = 1;
sprintf(swd->unit[drive].disk->disk_name, "fd%d", drive);
swd->unit[drive].disk->fops = &floppy_fops;
swd->unit[drive].disk->events = DISK_EVENT_MEDIA_CHANGE;
@ -839,14 +837,10 @@ static int swim_floppy_init(struct swim_priv *swd)
do {
struct gendisk *disk = swd->unit[drive].disk;
if (disk) {
if (disk->queue) {
blk_cleanup_queue(disk->queue);
disk->queue = NULL;
}
blk_mq_free_tag_set(&swd->unit[drive].tag_set);
put_disk(disk);
}
if (!disk)
continue;
blk_cleanup_disk(disk);
blk_mq_free_tag_set(&swd->unit[drive].tag_set);
} while (drive--);
return err;
}