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authorJeff Garzik <jeff@garzik.org>2006-10-04 07:05:11 -0400
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-10-04 13:27:26 -0500
commited542bed126caeefc6546b276e4af852d4d34f33 (patch)
treef81d7a0c6b997dc32b933fe39ed3a1d891d4d3c8 /drivers/scsi/raid_class.c
parent83aabc1be551dd1f07266c125ff48ec62a2ce515 (diff)
[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.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/drivers/scsi/raid_class.c b/drivers/scsi/raid_class.c
index 327b33a57b0..86e13183c9b 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);