diff options
Diffstat (limited to 'block/bsg.c')
| -rw-r--r-- | block/bsg.c | 26 |
1 files changed, 9 insertions, 17 deletions
diff --git a/block/bsg.c b/block/bsg.c index ff64ae3bacee..3ca92ebf6bbb 100644 --- a/block/bsg.c +++ b/block/bsg.c @@ -997,7 +997,7 @@ int bsg_register_queue(struct request_queue *q, struct device *parent, { struct bsg_class_device *bcd; dev_t dev; - int ret, minor; + int ret; struct device *class_dev = NULL; const char *devname; @@ -1017,23 +1017,16 @@ int bsg_register_queue(struct request_queue *q, struct device *parent, mutex_lock(&bsg_mutex); - ret = idr_pre_get(&bsg_minor_idr, GFP_KERNEL); - if (!ret) { - ret = -ENOMEM; - goto unlock; - } - - ret = idr_get_new(&bsg_minor_idr, bcd, &minor); - if (ret < 0) + ret = idr_alloc(&bsg_minor_idr, bcd, 0, BSG_MAX_DEVS, GFP_KERNEL); + if (ret < 0) { + if (ret == -ENOSPC) { + printk(KERN_ERR "bsg: too many bsg devices\n"); + ret = -EINVAL; + } goto unlock; - - if (minor >= BSG_MAX_DEVS) { - printk(KERN_ERR "bsg: too many bsg devices\n"); - ret = -EINVAL; - goto remove_idr; } - bcd->minor = minor; + bcd->minor = ret; bcd->queue = q; bcd->parent = get_device(parent); bcd->release = release; @@ -1059,8 +1052,7 @@ unregister_class_dev: device_unregister(class_dev); put_dev: put_device(parent); -remove_idr: - idr_remove(&bsg_minor_idr, minor); + idr_remove(&bsg_minor_idr, bcd->minor); unlock: mutex_unlock(&bsg_mutex); return ret; |