diff options
Diffstat (limited to 'drivers/misc/c2port/core.c')
| -rw-r--r-- | drivers/misc/c2port/core.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c index f428d86bfc1..f32550a74bd 100644 --- a/drivers/misc/c2port/core.c +++ b/drivers/misc/c2port/core.c @@ -885,7 +885,7 @@ struct c2port_device *c2port_device_register(char *name, struct c2port_ops *ops, void *devdata) { struct c2port_device *c2dev; - int id, ret; + int ret; if (unlikely(!ops) || unlikely(!ops->access) || \ unlikely(!ops->c2d_dir) || unlikely(!ops->c2ck_set) || \ @@ -897,22 +897,18 @@ struct c2port_device *c2port_device_register(char *name, if (unlikely(!c2dev)) return ERR_PTR(-ENOMEM); - ret = idr_pre_get(&c2port_idr, GFP_KERNEL); - if (!ret) { - ret = -ENOMEM; - goto error_idr_get_new; - } - + idr_preload(GFP_KERNEL); spin_lock_irq(&c2port_idr_lock); - ret = idr_get_new(&c2port_idr, c2dev, &id); + ret = idr_alloc(&c2port_idr, c2dev, 0, 0, GFP_NOWAIT); spin_unlock_irq(&c2port_idr_lock); + idr_preload_end(); if (ret < 0) - goto error_idr_get_new; - c2dev->id = id; + goto error_idr_alloc; + c2dev->id = ret; c2dev->dev = device_create(c2port_class, NULL, 0, c2dev, - "c2port%d", id); + "c2port%d", c2dev->id); if (unlikely(IS_ERR(c2dev->dev))) { ret = PTR_ERR(c2dev->dev); goto error_device_create; @@ -946,10 +942,10 @@ error_device_create_bin_file: error_device_create: spin_lock_irq(&c2port_idr_lock); - idr_remove(&c2port_idr, id); + idr_remove(&c2port_idr, c2dev->id); spin_unlock_irq(&c2port_idr_lock); -error_idr_get_new: +error_idr_alloc: kfree(c2dev); return ERR_PTR(ret); |