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gdrom: use blk_mq_alloc_disk

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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/20210602065345.355274-15-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-06-02 09:53:29 +03:00 committed by Jens Axboe
parent afea05a18d
commit 0592c3d166
1 changed files with 21 additions and 24 deletions
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45
drivers/cdrom/gdrom.c
View File

@ -772,53 +772,50 @@ static int probe_gdrom(struct platform_device *devptr)
goto probe_fail_no_mem;
}
probe_gdrom_setupcd();
gd.disk = alloc_disk(1);
if (!gd.disk) {
err = -ENODEV;
goto probe_fail_no_disk;
err = blk_mq_alloc_sq_tag_set(&gd.tag_set, &gdrom_mq_ops, 1,
BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING);
if (err)
goto probe_fail_free_cd_info;
gd.disk = blk_mq_alloc_disk(&gd.tag_set, NULL);
if (IS_ERR(gd.disk)) {
err = PTR_ERR(gd.disk);
goto probe_fail_free_tag_set;
}
gd.gdrom_rq = gd.disk->queue;
probe_gdrom_setupdisk();
if (register_cdrom(gd.disk, gd.cd_info)) {
err = -ENODEV;
goto probe_fail_cdrom_register;
goto probe_fail_cleanup_disk;
}
gd.disk->fops = &gdrom_bdops;
gd.disk->events = DISK_EVENT_MEDIA_CHANGE;
/* latch on to the interrupt */
err = gdrom_set_interrupt_handlers();
if (err)
goto probe_fail_cmdirq_register;
gd.gdrom_rq = blk_mq_init_sq_queue(&gd.tag_set, &gdrom_mq_ops, 1,
BLK_MQ_F_SHOULD_MERGE | BLK_MQ_F_BLOCKING);
if (IS_ERR(gd.gdrom_rq)) {
err = PTR_ERR(gd.gdrom_rq);
gd.gdrom_rq = NULL;
goto probe_fail_requestq;
}
goto probe_fail_cleanup_disk;
err = probe_gdrom_setupqueue();
if (err)
goto probe_fail_toc;
goto probe_fail_free_irqs;
gd.toc = kzalloc(sizeof(struct gdromtoc), GFP_KERNEL);
if (!gd.toc) {
err = -ENOMEM;
goto probe_fail_toc;
goto probe_fail_free_irqs;
}
add_disk(gd.disk);
return 0;
probe_fail_toc:
blk_cleanup_queue(gd.gdrom_rq);
blk_mq_free_tag_set(&gd.tag_set);
probe_fail_requestq:
probe_fail_free_irqs:
free_irq(HW_EVENT_GDROM_DMA, &gd);
free_irq(HW_EVENT_GDROM_CMD, &gd);
probe_fail_cmdirq_register:
probe_fail_cdrom_register:
del_gendisk(gd.disk);
probe_fail_no_disk:
probe_fail_cleanup_disk:
blk_cleanup_disk(gd.disk);
probe_fail_free_tag_set:
blk_mq_free_tag_set(&gd.tag_set);
probe_fail_free_cd_info:
kfree(gd.cd_info);
probe_fail_no_mem:
unregister_blkdev(gdrom_major, GDROM_DEV_NAME);