From cd94c9ed59bad76e68d1c8910fc564351ce2162c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Fri, 9 Nov 2018 14:51:09 +0100 Subject: [PATCH] sx8: cleanup queue and disk allocation / freeing Make the disk/queue alloc and free helpers per-port by moving the trivial loops into the callers. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- drivers/block/sx8.c | 107 +++++++++++++++++++++++----------------------------- 1 file changed, 48 insertions(+), 59 deletions(-) diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c index 064b8c5..1f371b9 100644 --- a/drivers/block/sx8.c +++ b/drivers/block/sx8.c @@ -1499,70 +1499,54 @@ static const struct blk_mq_ops carm_mq_ops = { .queue_rq = carm_queue_rq, }; -static int carm_init_disks(struct carm_host *host) +static int carm_init_disk(struct carm_host *host, unsigned int port_no) { - unsigned int i; - int rc = 0; - - for (i = 0; i < CARM_MAX_PORTS; i++) { - struct gendisk *disk; - struct request_queue *q; - struct carm_port *port; - - port = &host->port[i]; - port->host = host; - port->port_no = i; - - disk = alloc_disk(CARM_MINORS_PER_MAJOR); - if (!disk) { - rc = -ENOMEM; - break; - } + struct carm_port *port = &host->port[port_no]; + struct gendisk *disk; + struct request_queue *q; - port->disk = disk; - sprintf(disk->disk_name, DRV_NAME "/%u", - (unsigned int) (host->id * CARM_MAX_PORTS) + i); - disk->major = host->major; - disk->first_minor = i * CARM_MINORS_PER_MAJOR; - disk->fops = &carm_bd_ops; - disk->private_data = port; - - q = blk_mq_init_sq_queue(&port->tag_set, &carm_mq_ops, - max_queue, BLK_MQ_F_SHOULD_MERGE); - if (IS_ERR(q)) { - rc = PTR_ERR(q); - break; - } - disk->queue = q; - blk_queue_max_segments(q, CARM_MAX_REQ_SG); - blk_queue_segment_boundary(q, CARM_SG_BOUNDARY); + port->host = host; + port->port_no = port_no; - q->queuedata = port; - } + disk = alloc_disk(CARM_MINORS_PER_MAJOR); + if (!disk) + return -ENOMEM; - return rc; + port->disk = disk; + sprintf(disk->disk_name, DRV_NAME "/%u", + (unsigned int)host->id * CARM_MAX_PORTS + port_no); + disk->major = host->major; + disk->first_minor = port_no * CARM_MINORS_PER_MAJOR; + disk->fops = &carm_bd_ops; + disk->private_data = port; + + q = blk_mq_init_sq_queue(&port->tag_set, &carm_mq_ops, + max_queue, BLK_MQ_F_SHOULD_MERGE); + if (IS_ERR(q)) + return PTR_ERR(q); + disk->queue = q; + blk_queue_max_segments(q, CARM_MAX_REQ_SG); + blk_queue_segment_boundary(q, CARM_SG_BOUNDARY); + + q->queuedata = port; + return 0; } -static void carm_free_disks(struct carm_host *host) +static void carm_free_disk(struct carm_host *host, unsigned int port_no) { - unsigned int i; + struct carm_port *port = &host->port[port_no]; + struct gendisk *disk = port->disk; - for (i = 0; i < CARM_MAX_PORTS; i++) { - struct carm_port *port = &host->port[i]; - struct gendisk *disk = port->disk; - - if (disk) { - struct request_queue *q = disk->queue; + if (!disk) + return; - if (disk->flags & GENHD_FL_UP) - del_gendisk(disk); - if (q) { - blk_mq_free_tag_set(&port->tag_set); - blk_cleanup_queue(q); - } - put_disk(disk); - } + if (disk->flags & GENHD_FL_UP) + del_gendisk(disk); + if (disk->queue) { + blk_mq_free_tag_set(&port->tag_set); + blk_cleanup_queue(disk->queue); } + put_disk(disk); } static int carm_init_shm(struct carm_host *host) @@ -1667,9 +1651,11 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) if (host->flags & FL_DYN_MAJOR) host->major = rc; - rc = carm_init_disks(host); - if (rc) - goto err_out_blkdev_disks; + for (i = 0; i < CARM_MAX_PORTS; i++) { + rc = carm_init_disk(host, i); + if (rc) + goto err_out_blkdev_disks; + } pci_set_master(pdev); @@ -1699,7 +1685,8 @@ static int carm_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) err_out_free_irq: free_irq(pdev->irq, host); err_out_blkdev_disks: - carm_free_disks(host); + for (i = 0; i < CARM_MAX_PORTS; i++) + carm_free_disk(host, i); unregister_blkdev(host->major, host->name); err_out_free_majors: if (host->major == 160) @@ -1724,6 +1711,7 @@ err_out: static void carm_remove_one (struct pci_dev *pdev) { struct carm_host *host = pci_get_drvdata(pdev); + unsigned int i; if (!host) { printk(KERN_ERR PFX "BUG: no host data for PCI(%s)\n", @@ -1732,7 +1720,8 @@ static void carm_remove_one (struct pci_dev *pdev) } free_irq(pdev->irq, host); - carm_free_disks(host); + for (i = 0; i < CARM_MAX_PORTS; i++) + carm_free_disk(host, i); unregister_blkdev(host->major, host->name); if (host->major == 160) clear_bit(0, &carm_major_alloc); -- 2.7.4