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| author | Jeff Garzik <jeff@garzik.org> | 2006-10-04 07:05:11 -0400 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2006-10-04 13:27:26 -0500 |
| commit | ed542bed126caeefc6546b276e4af852d4d34f33 (patch) | |
| tree | f81d7a0c6b997dc32b933fe39ed3a1d891d4d3c8 /drivers/scsi/raid_class.c | |
| parent | 83aabc1be551dd1f07266c125ff48ec62a2ce515 (diff) | |
| download | lwn-ed542bed126caeefc6546b276e4af852d4d34f33.tar.gz lwn-ed542bed126caeefc6546b276e4af852d4d34f33.zip | |
[SCSI] raid class: handle component-add errors
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/raid_class.c')
| -rw-r--r-- | drivers/scsi/raid_class.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/scsi/raid_class.c b/drivers/scsi/raid_class.c index 327b33a57b0a..86e13183c9ba 100644 --- a/drivers/scsi/raid_class.c +++ b/drivers/scsi/raid_class.c @@ -215,18 +215,19 @@ static void raid_component_release(struct class_device *cdev) kfree(rc); } -void raid_component_add(struct raid_template *r,struct device *raid_dev, - struct device *component_dev) +int raid_component_add(struct raid_template *r,struct device *raid_dev, + struct device *component_dev) { struct class_device *cdev = attribute_container_find_class_device(&r->raid_attrs.ac, raid_dev); struct raid_component *rc; struct raid_data *rd = class_get_devdata(cdev); + int err; rc = kzalloc(sizeof(*rc), GFP_KERNEL); if (!rc) - return; + return -ENOMEM; INIT_LIST_HEAD(&rc->node); class_device_initialize(&rc->cdev); @@ -239,7 +240,18 @@ void raid_component_add(struct raid_template *r,struct device *raid_dev, list_add_tail(&rc->node, &rd->component_list); rc->cdev.parent = cdev; rc->cdev.class = &raid_class.class; - class_device_add(&rc->cdev); + err = class_device_add(&rc->cdev); + if (err) + goto err_out; + + return 0; + +err_out: + list_del(&rc->node); + rd->component_count--; + put_device(component_dev); + kfree(rc); + return err; } EXPORT_SYMBOL(raid_component_add); |