[PATCH 28/30] amiflop: use blk_mq_alloc_disk and blk_cleanup_disk

Christoph Hellwig
2021-06-02T07:46:36Z

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>
---
drivers/block/amiflop.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 9e2d0c6a3877..8b1714021498 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1781,15 +1781,13 @@ static int fd_alloc_disk(int drive, int system)
{
struct gendisk *disk;

- disk = alloc_disk(1);
- if (!disk)
- goto out;
- disk->queue = blk_mq_init_queue(&unit[drive].tag_set);
- if (IS_ERR(disk->queue))
- goto out_put_disk;
+ disk = blk_mq_alloc_disk(&unit[drive].tag_set, NULL);
+ if (IS_ERR(disk))
+ return PTR_ERR(disk);

disk->major = FLOPPY_MAJOR;
disk->first_minor = drive + system;
+ disk->minors = 1;
disk->fops = &floppy_fops;
disk->events = DISK_EVENT_MEDIA_CHANGE;
if (system)
@@ -1802,12 +1800,6 @@ static int fd_alloc_disk(int drive, int system)
unit[drive].gendisk[system] = disk;
add_disk(disk);
return 0;
-
-out_put_disk:
- disk->queue = NULL;
- put_disk(disk);
-out:
- return -ENOMEM;
}

static int fd_alloc_drive(int drive)